958 lines
31 KiB
C
958 lines
31 KiB
C
/* Autogenerated: 'src/ExtractionOCaml/word_by_word_montgomery' --inline --static --use-value-barrier p256 64 '2^256 - 2^224 + 2^192 + 2^96 - 1' mul square add sub opp from_montgomery to_montgomery nonzero selectznz to_bytes from_bytes one msat divstep divstep_precomp */
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/* curve description: p256 */
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/* machine_wordsize = 64 (from "64") */
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/* requested operations: mul, square, add, sub, opp, from_montgomery, to_montgomery, nonzero, selectznz, to_bytes, from_bytes, one, msat, divstep, divstep_precomp */
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/* m = 0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff (from "2^256 - 2^224 + 2^192 + 2^96 - 1") */
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/* */
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/* NOTE: In addition to the bounds specified above each function, all */
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/* functions synthesized for this Montgomery arithmetic require the */
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/* input to be strictly less than the prime modulus (m), and also */
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/* require the input to be in the unique saturated representation. */
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/* All functions also ensure that these two properties are true of */
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/* return values. */
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/* */
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/* Computed values: */
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/* eval z = z[0] + (z[1] << 64) + (z[2] << 128) + (z[3] << 192) */
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/* bytes_eval z = z[0] + (z[1] << 8) + (z[2] << 16) + (z[3] << 24) + (z[4] << 32) + (z[5] << 40) + (z[6] << 48) + (z[7] << 56) + (z[8] << 64) + (z[9] << 72) + (z[10] << 80) + (z[11] << 88) + (z[12] << 96) + (z[13] << 104) + (z[14] << 112) + (z[15] << 120) + (z[16] << 128) + (z[17] << 136) + (z[18] << 144) + (z[19] << 152) + (z[20] << 160) + (z[21] << 168) + (z[22] << 176) + (z[23] << 184) + (z[24] << 192) + (z[25] << 200) + (z[26] << 208) + (z[27] << 216) + (z[28] << 224) + (z[29] << 232) + (z[30] << 240) + (z[31] << 248) */
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/* twos_complement_eval z = let x1 := z[0] + (z[1] << 64) + (z[2] << 128) + (z[3] << 192) in */
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/* if x1 & (2^256-1) < 2^255 then x1 & (2^256-1) else (x1 & (2^256-1)) - 2^256 */
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#include <stdint.h>
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typedef unsigned char fiat_p256_uint1;
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typedef signed char fiat_p256_int1;
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#if defined(__GNUC__) || defined(__clang__)
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# define FIAT_P256_FIAT_EXTENSION __extension__
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# define FIAT_P256_FIAT_INLINE __inline__
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#else
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# define FIAT_P256_FIAT_EXTENSION
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# define FIAT_P256_FIAT_INLINE
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#endif
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FIAT_P256_FIAT_EXTENSION typedef signed __int128 fiat_p256_int128;
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FIAT_P256_FIAT_EXTENSION typedef unsigned __int128 fiat_p256_uint128;
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/* The type fiat_p256_montgomery_domain_field_element is a field element in the Montgomery domain. */
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/* Bounds: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]] */
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typedef uint64_t fiat_p256_montgomery_domain_field_element[4];
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/* The type fiat_p256_non_montgomery_domain_field_element is a field element NOT in the Montgomery domain. */
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/* Bounds: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]] */
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typedef uint64_t fiat_p256_non_montgomery_domain_field_element[4];
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#if (-1 & 3) != 3
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#error "This code only works on a two's complement system"
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#endif
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#if !defined(FIAT_P256_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
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static __inline__ uint64_t fiat_p256_value_barrier_u64(uint64_t a) {
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__asm__("" : "+r"(a) : /* no inputs */);
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return a;
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}
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#else
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# define fiat_p256_value_barrier_u64(x) (x)
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#endif
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/*
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* The function fiat_p256_addcarryx_u64 is an addition with carry.
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*
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* Postconditions:
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* out1 = (arg1 + arg2 + arg3) mod 2^64
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* out2 = ⌊(arg1 + arg2 + arg3) / 2^64⌋
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*
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* Input Bounds:
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* arg1: [0x0 ~> 0x1]
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* arg2: [0x0 ~> 0xffffffffffffffff]
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* arg3: [0x0 ~> 0xffffffffffffffff]
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* Output Bounds:
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* out1: [0x0 ~> 0xffffffffffffffff]
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* out2: [0x0 ~> 0x1]
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*/
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static FIAT_P256_FIAT_INLINE void fiat_p256_addcarryx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
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fiat_p256_uint128 x1;
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uint64_t x2;
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fiat_p256_uint1 x3;
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x1 = ((arg1 + (fiat_p256_uint128)arg2) + arg3);
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x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
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x3 = (fiat_p256_uint1)(x1 >> 64);
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*out1 = x2;
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*out2 = x3;
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}
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/*
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* The function fiat_p256_subborrowx_u64 is a subtraction with borrow.
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*
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* Postconditions:
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* out1 = (-arg1 + arg2 + -arg3) mod 2^64
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* out2 = -⌊(-arg1 + arg2 + -arg3) / 2^64⌋
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*
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* Input Bounds:
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* arg1: [0x0 ~> 0x1]
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* arg2: [0x0 ~> 0xffffffffffffffff]
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* arg3: [0x0 ~> 0xffffffffffffffff]
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* Output Bounds:
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* out1: [0x0 ~> 0xffffffffffffffff]
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* out2: [0x0 ~> 0x1]
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*/
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static FIAT_P256_FIAT_INLINE void fiat_p256_subborrowx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
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fiat_p256_int128 x1;
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fiat_p256_int1 x2;
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uint64_t x3;
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x1 = ((arg2 - (fiat_p256_int128)arg1) - arg3);
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x2 = (fiat_p256_int1)(x1 >> 64);
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x3 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
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*out1 = x3;
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*out2 = (fiat_p256_uint1)(0x0 - x2);
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}
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/*
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* The function fiat_p256_mulx_u64 is a multiplication, returning the full double-width result.
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*
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* Postconditions:
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* out1 = (arg1 * arg2) mod 2^64
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* out2 = ⌊arg1 * arg2 / 2^64⌋
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*
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* Input Bounds:
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* arg1: [0x0 ~> 0xffffffffffffffff]
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* arg2: [0x0 ~> 0xffffffffffffffff]
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* Output Bounds:
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* out1: [0x0 ~> 0xffffffffffffffff]
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* out2: [0x0 ~> 0xffffffffffffffff]
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*/
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static FIAT_P256_FIAT_INLINE void fiat_p256_mulx_u64(uint64_t* out1, uint64_t* out2, uint64_t arg1, uint64_t arg2) {
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fiat_p256_uint128 x1;
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uint64_t x2;
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uint64_t x3;
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x1 = ((fiat_p256_uint128)arg1 * arg2);
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x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
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x3 = (uint64_t)(x1 >> 64);
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*out1 = x2;
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*out2 = x3;
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}
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/*
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* The function fiat_p256_cmovznz_u64 is a single-word conditional move.
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*
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* Postconditions:
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* out1 = (if arg1 = 0 then arg2 else arg3)
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*
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* Input Bounds:
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* arg1: [0x0 ~> 0x1]
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* arg2: [0x0 ~> 0xffffffffffffffff]
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* arg3: [0x0 ~> 0xffffffffffffffff]
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* Output Bounds:
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* out1: [0x0 ~> 0xffffffffffffffff]
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*/
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static FIAT_P256_FIAT_INLINE void fiat_p256_cmovznz_u64(uint64_t* out1, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
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fiat_p256_uint1 x1;
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uint64_t x2;
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uint64_t x3;
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x1 = (!(!arg1));
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x2 = ((fiat_p256_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
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x3 = ((fiat_p256_value_barrier_u64(x2) & arg3) | (fiat_p256_value_barrier_u64((~x2)) & arg2));
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*out1 = x3;
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}
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/*
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* The function fiat_p256_mul multiplies two field elements in the Montgomery domain.
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*
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* Preconditions:
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* 0 ≤ eval arg1 < m
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* 0 ≤ eval arg2 < m
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* Postconditions:
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* eval (from_montgomery out1) mod m = (eval (from_montgomery arg1) * eval (from_montgomery arg2)) mod m
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* 0 ≤ eval out1 < m
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*
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*/
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static FIAT_P256_FIAT_INLINE void fiat_p256_mul(fiat_p256_montgomery_domain_field_element out1, const fiat_p256_montgomery_domain_field_element arg1, const fiat_p256_montgomery_domain_field_element arg2) {
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uint64_t x1;
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uint64_t x2;
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uint64_t x3;
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uint64_t x4;
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uint64_t x5;
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uint64_t x6;
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uint64_t x7;
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uint64_t x8;
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uint64_t x9;
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uint64_t x10;
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uint64_t x11;
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uint64_t x12;
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uint64_t x13;
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fiat_p256_uint1 x14;
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uint64_t x15;
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fiat_p256_uint1 x16;
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uint64_t x17;
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fiat_p256_uint1 x18;
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uint64_t x19;
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uint64_t x20;
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uint64_t x21;
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uint64_t x22;
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uint64_t x23;
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uint64_t x24;
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uint64_t x25;
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uint64_t x26;
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fiat_p256_uint1 x27;
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uint64_t x28;
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uint64_t x29;
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fiat_p256_uint1 x30;
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uint64_t x31;
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fiat_p256_uint1 x32;
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uint64_t x33;
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fiat_p256_uint1 x34;
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uint64_t x35;
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fiat_p256_uint1 x36;
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uint64_t x37;
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fiat_p256_uint1 x38;
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uint64_t x39;
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uint64_t x40;
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uint64_t x41;
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uint64_t x42;
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uint64_t x43;
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uint64_t x44;
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uint64_t x45;
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uint64_t x46;
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uint64_t x47;
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fiat_p256_uint1 x48;
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uint64_t x49;
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fiat_p256_uint1 x50;
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uint64_t x51;
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fiat_p256_uint1 x52;
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uint64_t x53;
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uint64_t x54;
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fiat_p256_uint1 x55;
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uint64_t x56;
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fiat_p256_uint1 x57;
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uint64_t x58;
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fiat_p256_uint1 x59;
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uint64_t x60;
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fiat_p256_uint1 x61;
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uint64_t x62;
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fiat_p256_uint1 x63;
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uint64_t x64;
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uint64_t x65;
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uint64_t x66;
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uint64_t x67;
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uint64_t x68;
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uint64_t x69;
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uint64_t x70;
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fiat_p256_uint1 x71;
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uint64_t x72;
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uint64_t x73;
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fiat_p256_uint1 x74;
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uint64_t x75;
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fiat_p256_uint1 x76;
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uint64_t x77;
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fiat_p256_uint1 x78;
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uint64_t x79;
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fiat_p256_uint1 x80;
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uint64_t x81;
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fiat_p256_uint1 x82;
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uint64_t x83;
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uint64_t x84;
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uint64_t x85;
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uint64_t x86;
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uint64_t x87;
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uint64_t x88;
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uint64_t x89;
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uint64_t x90;
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uint64_t x91;
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uint64_t x92;
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fiat_p256_uint1 x93;
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uint64_t x94;
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fiat_p256_uint1 x95;
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uint64_t x96;
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fiat_p256_uint1 x97;
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uint64_t x98;
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uint64_t x99;
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fiat_p256_uint1 x100;
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uint64_t x101;
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fiat_p256_uint1 x102;
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uint64_t x103;
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fiat_p256_uint1 x104;
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uint64_t x105;
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fiat_p256_uint1 x106;
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uint64_t x107;
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fiat_p256_uint1 x108;
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uint64_t x109;
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uint64_t x110;
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uint64_t x111;
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uint64_t x112;
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uint64_t x113;
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uint64_t x114;
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uint64_t x115;
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fiat_p256_uint1 x116;
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uint64_t x117;
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uint64_t x118;
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fiat_p256_uint1 x119;
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uint64_t x120;
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fiat_p256_uint1 x121;
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uint64_t x122;
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fiat_p256_uint1 x123;
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uint64_t x124;
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fiat_p256_uint1 x125;
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uint64_t x126;
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fiat_p256_uint1 x127;
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uint64_t x128;
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uint64_t x129;
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uint64_t x130;
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uint64_t x131;
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uint64_t x132;
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uint64_t x133;
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uint64_t x134;
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uint64_t x135;
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uint64_t x136;
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uint64_t x137;
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fiat_p256_uint1 x138;
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uint64_t x139;
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fiat_p256_uint1 x140;
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uint64_t x141;
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fiat_p256_uint1 x142;
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uint64_t x143;
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uint64_t x144;
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fiat_p256_uint1 x145;
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uint64_t x146;
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fiat_p256_uint1 x147;
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uint64_t x148;
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fiat_p256_uint1 x149;
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uint64_t x150;
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fiat_p256_uint1 x151;
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uint64_t x152;
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fiat_p256_uint1 x153;
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uint64_t x154;
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uint64_t x155;
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uint64_t x156;
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uint64_t x157;
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uint64_t x158;
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uint64_t x159;
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uint64_t x160;
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fiat_p256_uint1 x161;
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uint64_t x162;
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uint64_t x163;
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fiat_p256_uint1 x164;
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uint64_t x165;
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fiat_p256_uint1 x166;
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uint64_t x167;
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fiat_p256_uint1 x168;
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uint64_t x169;
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fiat_p256_uint1 x170;
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uint64_t x171;
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fiat_p256_uint1 x172;
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uint64_t x173;
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uint64_t x174;
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fiat_p256_uint1 x175;
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uint64_t x176;
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fiat_p256_uint1 x177;
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uint64_t x178;
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fiat_p256_uint1 x179;
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uint64_t x180;
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fiat_p256_uint1 x181;
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uint64_t x182;
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fiat_p256_uint1 x183;
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uint64_t x184;
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uint64_t x185;
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uint64_t x186;
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uint64_t x187;
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x1 = (arg1[1]);
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x2 = (arg1[2]);
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x3 = (arg1[3]);
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x4 = (arg1[0]);
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fiat_p256_mulx_u64(&x5, &x6, x4, (arg2[3]));
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fiat_p256_mulx_u64(&x7, &x8, x4, (arg2[2]));
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fiat_p256_mulx_u64(&x9, &x10, x4, (arg2[1]));
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fiat_p256_mulx_u64(&x11, &x12, x4, (arg2[0]));
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fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x12, x9);
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fiat_p256_addcarryx_u64(&x15, &x16, x14, x10, x7);
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fiat_p256_addcarryx_u64(&x17, &x18, x16, x8, x5);
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x19 = (x18 + x6);
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fiat_p256_mulx_u64(&x20, &x21, x11, UINT64_C(0xffffffff00000001));
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fiat_p256_mulx_u64(&x22, &x23, x11, UINT32_C(0xffffffff));
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fiat_p256_mulx_u64(&x24, &x25, x11, UINT64_C(0xffffffffffffffff));
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fiat_p256_addcarryx_u64(&x26, &x27, 0x0, x25, x22);
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x28 = (x27 + x23);
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fiat_p256_addcarryx_u64(&x29, &x30, 0x0, x11, x24);
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fiat_p256_addcarryx_u64(&x31, &x32, x30, x13, x26);
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fiat_p256_addcarryx_u64(&x33, &x34, x32, x15, x28);
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fiat_p256_addcarryx_u64(&x35, &x36, x34, x17, x20);
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fiat_p256_addcarryx_u64(&x37, &x38, x36, x19, x21);
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fiat_p256_mulx_u64(&x39, &x40, x1, (arg2[3]));
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fiat_p256_mulx_u64(&x41, &x42, x1, (arg2[2]));
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fiat_p256_mulx_u64(&x43, &x44, x1, (arg2[1]));
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fiat_p256_mulx_u64(&x45, &x46, x1, (arg2[0]));
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fiat_p256_addcarryx_u64(&x47, &x48, 0x0, x46, x43);
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fiat_p256_addcarryx_u64(&x49, &x50, x48, x44, x41);
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fiat_p256_addcarryx_u64(&x51, &x52, x50, x42, x39);
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x53 = (x52 + x40);
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fiat_p256_addcarryx_u64(&x54, &x55, 0x0, x31, x45);
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fiat_p256_addcarryx_u64(&x56, &x57, x55, x33, x47);
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fiat_p256_addcarryx_u64(&x58, &x59, x57, x35, x49);
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fiat_p256_addcarryx_u64(&x60, &x61, x59, x37, x51);
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fiat_p256_addcarryx_u64(&x62, &x63, x61, x38, x53);
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fiat_p256_mulx_u64(&x64, &x65, x54, UINT64_C(0xffffffff00000001));
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fiat_p256_mulx_u64(&x66, &x67, x54, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x68, &x69, x54, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x70, &x71, 0x0, x69, x66);
|
|
x72 = (x71 + x67);
|
|
fiat_p256_addcarryx_u64(&x73, &x74, 0x0, x54, x68);
|
|
fiat_p256_addcarryx_u64(&x75, &x76, x74, x56, x70);
|
|
fiat_p256_addcarryx_u64(&x77, &x78, x76, x58, x72);
|
|
fiat_p256_addcarryx_u64(&x79, &x80, x78, x60, x64);
|
|
fiat_p256_addcarryx_u64(&x81, &x82, x80, x62, x65);
|
|
x83 = ((uint64_t)x82 + x63);
|
|
fiat_p256_mulx_u64(&x84, &x85, x2, (arg2[3]));
|
|
fiat_p256_mulx_u64(&x86, &x87, x2, (arg2[2]));
|
|
fiat_p256_mulx_u64(&x88, &x89, x2, (arg2[1]));
|
|
fiat_p256_mulx_u64(&x90, &x91, x2, (arg2[0]));
|
|
fiat_p256_addcarryx_u64(&x92, &x93, 0x0, x91, x88);
|
|
fiat_p256_addcarryx_u64(&x94, &x95, x93, x89, x86);
|
|
fiat_p256_addcarryx_u64(&x96, &x97, x95, x87, x84);
|
|
x98 = (x97 + x85);
|
|
fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x75, x90);
|
|
fiat_p256_addcarryx_u64(&x101, &x102, x100, x77, x92);
|
|
fiat_p256_addcarryx_u64(&x103, &x104, x102, x79, x94);
|
|
fiat_p256_addcarryx_u64(&x105, &x106, x104, x81, x96);
|
|
fiat_p256_addcarryx_u64(&x107, &x108, x106, x83, x98);
|
|
fiat_p256_mulx_u64(&x109, &x110, x99, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x111, &x112, x99, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x113, &x114, x99, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x115, &x116, 0x0, x114, x111);
|
|
x117 = (x116 + x112);
|
|
fiat_p256_addcarryx_u64(&x118, &x119, 0x0, x99, x113);
|
|
fiat_p256_addcarryx_u64(&x120, &x121, x119, x101, x115);
|
|
fiat_p256_addcarryx_u64(&x122, &x123, x121, x103, x117);
|
|
fiat_p256_addcarryx_u64(&x124, &x125, x123, x105, x109);
|
|
fiat_p256_addcarryx_u64(&x126, &x127, x125, x107, x110);
|
|
x128 = ((uint64_t)x127 + x108);
|
|
fiat_p256_mulx_u64(&x129, &x130, x3, (arg2[3]));
|
|
fiat_p256_mulx_u64(&x131, &x132, x3, (arg2[2]));
|
|
fiat_p256_mulx_u64(&x133, &x134, x3, (arg2[1]));
|
|
fiat_p256_mulx_u64(&x135, &x136, x3, (arg2[0]));
|
|
fiat_p256_addcarryx_u64(&x137, &x138, 0x0, x136, x133);
|
|
fiat_p256_addcarryx_u64(&x139, &x140, x138, x134, x131);
|
|
fiat_p256_addcarryx_u64(&x141, &x142, x140, x132, x129);
|
|
x143 = (x142 + x130);
|
|
fiat_p256_addcarryx_u64(&x144, &x145, 0x0, x120, x135);
|
|
fiat_p256_addcarryx_u64(&x146, &x147, x145, x122, x137);
|
|
fiat_p256_addcarryx_u64(&x148, &x149, x147, x124, x139);
|
|
fiat_p256_addcarryx_u64(&x150, &x151, x149, x126, x141);
|
|
fiat_p256_addcarryx_u64(&x152, &x153, x151, x128, x143);
|
|
fiat_p256_mulx_u64(&x154, &x155, x144, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x156, &x157, x144, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x158, &x159, x144, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x160, &x161, 0x0, x159, x156);
|
|
x162 = (x161 + x157);
|
|
fiat_p256_addcarryx_u64(&x163, &x164, 0x0, x144, x158);
|
|
fiat_p256_addcarryx_u64(&x165, &x166, x164, x146, x160);
|
|
fiat_p256_addcarryx_u64(&x167, &x168, x166, x148, x162);
|
|
fiat_p256_addcarryx_u64(&x169, &x170, x168, x150, x154);
|
|
fiat_p256_addcarryx_u64(&x171, &x172, x170, x152, x155);
|
|
x173 = ((uint64_t)x172 + x153);
|
|
fiat_p256_subborrowx_u64(&x174, &x175, 0x0, x165, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_subborrowx_u64(&x176, &x177, x175, x167, UINT32_C(0xffffffff));
|
|
fiat_p256_subborrowx_u64(&x178, &x179, x177, x169, 0x0);
|
|
fiat_p256_subborrowx_u64(&x180, &x181, x179, x171, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_subborrowx_u64(&x182, &x183, x181, x173, 0x0);
|
|
fiat_p256_cmovznz_u64(&x184, x183, x174, x165);
|
|
fiat_p256_cmovznz_u64(&x185, x183, x176, x167);
|
|
fiat_p256_cmovznz_u64(&x186, x183, x178, x169);
|
|
fiat_p256_cmovznz_u64(&x187, x183, x180, x171);
|
|
out1[0] = x184;
|
|
out1[1] = x185;
|
|
out1[2] = x186;
|
|
out1[3] = x187;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_square squares a field element in the Montgomery domain.
|
|
*
|
|
* Preconditions:
|
|
* 0 ≤ eval arg1 < m
|
|
* Postconditions:
|
|
* eval (from_montgomery out1) mod m = (eval (from_montgomery arg1) * eval (from_montgomery arg1)) mod m
|
|
* 0 ≤ eval out1 < m
|
|
*
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_square(fiat_p256_montgomery_domain_field_element out1, const fiat_p256_montgomery_domain_field_element arg1) {
|
|
uint64_t x1;
|
|
uint64_t x2;
|
|
uint64_t x3;
|
|
uint64_t x4;
|
|
uint64_t x5;
|
|
uint64_t x6;
|
|
uint64_t x7;
|
|
uint64_t x8;
|
|
uint64_t x9;
|
|
uint64_t x10;
|
|
uint64_t x11;
|
|
uint64_t x12;
|
|
uint64_t x13;
|
|
fiat_p256_uint1 x14;
|
|
uint64_t x15;
|
|
fiat_p256_uint1 x16;
|
|
uint64_t x17;
|
|
fiat_p256_uint1 x18;
|
|
uint64_t x19;
|
|
uint64_t x20;
|
|
uint64_t x21;
|
|
uint64_t x22;
|
|
uint64_t x23;
|
|
uint64_t x24;
|
|
uint64_t x25;
|
|
uint64_t x26;
|
|
fiat_p256_uint1 x27;
|
|
uint64_t x28;
|
|
uint64_t x29;
|
|
fiat_p256_uint1 x30;
|
|
uint64_t x31;
|
|
fiat_p256_uint1 x32;
|
|
uint64_t x33;
|
|
fiat_p256_uint1 x34;
|
|
uint64_t x35;
|
|
fiat_p256_uint1 x36;
|
|
uint64_t x37;
|
|
fiat_p256_uint1 x38;
|
|
uint64_t x39;
|
|
uint64_t x40;
|
|
uint64_t x41;
|
|
uint64_t x42;
|
|
uint64_t x43;
|
|
uint64_t x44;
|
|
uint64_t x45;
|
|
uint64_t x46;
|
|
uint64_t x47;
|
|
fiat_p256_uint1 x48;
|
|
uint64_t x49;
|
|
fiat_p256_uint1 x50;
|
|
uint64_t x51;
|
|
fiat_p256_uint1 x52;
|
|
uint64_t x53;
|
|
uint64_t x54;
|
|
fiat_p256_uint1 x55;
|
|
uint64_t x56;
|
|
fiat_p256_uint1 x57;
|
|
uint64_t x58;
|
|
fiat_p256_uint1 x59;
|
|
uint64_t x60;
|
|
fiat_p256_uint1 x61;
|
|
uint64_t x62;
|
|
fiat_p256_uint1 x63;
|
|
uint64_t x64;
|
|
uint64_t x65;
|
|
uint64_t x66;
|
|
uint64_t x67;
|
|
uint64_t x68;
|
|
uint64_t x69;
|
|
uint64_t x70;
|
|
fiat_p256_uint1 x71;
|
|
uint64_t x72;
|
|
uint64_t x73;
|
|
fiat_p256_uint1 x74;
|
|
uint64_t x75;
|
|
fiat_p256_uint1 x76;
|
|
uint64_t x77;
|
|
fiat_p256_uint1 x78;
|
|
uint64_t x79;
|
|
fiat_p256_uint1 x80;
|
|
uint64_t x81;
|
|
fiat_p256_uint1 x82;
|
|
uint64_t x83;
|
|
uint64_t x84;
|
|
uint64_t x85;
|
|
uint64_t x86;
|
|
uint64_t x87;
|
|
uint64_t x88;
|
|
uint64_t x89;
|
|
uint64_t x90;
|
|
uint64_t x91;
|
|
uint64_t x92;
|
|
fiat_p256_uint1 x93;
|
|
uint64_t x94;
|
|
fiat_p256_uint1 x95;
|
|
uint64_t x96;
|
|
fiat_p256_uint1 x97;
|
|
uint64_t x98;
|
|
uint64_t x99;
|
|
fiat_p256_uint1 x100;
|
|
uint64_t x101;
|
|
fiat_p256_uint1 x102;
|
|
uint64_t x103;
|
|
fiat_p256_uint1 x104;
|
|
uint64_t x105;
|
|
fiat_p256_uint1 x106;
|
|
uint64_t x107;
|
|
fiat_p256_uint1 x108;
|
|
uint64_t x109;
|
|
uint64_t x110;
|
|
uint64_t x111;
|
|
uint64_t x112;
|
|
uint64_t x113;
|
|
uint64_t x114;
|
|
uint64_t x115;
|
|
fiat_p256_uint1 x116;
|
|
uint64_t x117;
|
|
uint64_t x118;
|
|
fiat_p256_uint1 x119;
|
|
uint64_t x120;
|
|
fiat_p256_uint1 x121;
|
|
uint64_t x122;
|
|
fiat_p256_uint1 x123;
|
|
uint64_t x124;
|
|
fiat_p256_uint1 x125;
|
|
uint64_t x126;
|
|
fiat_p256_uint1 x127;
|
|
uint64_t x128;
|
|
uint64_t x129;
|
|
uint64_t x130;
|
|
uint64_t x131;
|
|
uint64_t x132;
|
|
uint64_t x133;
|
|
uint64_t x134;
|
|
uint64_t x135;
|
|
uint64_t x136;
|
|
uint64_t x137;
|
|
fiat_p256_uint1 x138;
|
|
uint64_t x139;
|
|
fiat_p256_uint1 x140;
|
|
uint64_t x141;
|
|
fiat_p256_uint1 x142;
|
|
uint64_t x143;
|
|
uint64_t x144;
|
|
fiat_p256_uint1 x145;
|
|
uint64_t x146;
|
|
fiat_p256_uint1 x147;
|
|
uint64_t x148;
|
|
fiat_p256_uint1 x149;
|
|
uint64_t x150;
|
|
fiat_p256_uint1 x151;
|
|
uint64_t x152;
|
|
fiat_p256_uint1 x153;
|
|
uint64_t x154;
|
|
uint64_t x155;
|
|
uint64_t x156;
|
|
uint64_t x157;
|
|
uint64_t x158;
|
|
uint64_t x159;
|
|
uint64_t x160;
|
|
fiat_p256_uint1 x161;
|
|
uint64_t x162;
|
|
uint64_t x163;
|
|
fiat_p256_uint1 x164;
|
|
uint64_t x165;
|
|
fiat_p256_uint1 x166;
|
|
uint64_t x167;
|
|
fiat_p256_uint1 x168;
|
|
uint64_t x169;
|
|
fiat_p256_uint1 x170;
|
|
uint64_t x171;
|
|
fiat_p256_uint1 x172;
|
|
uint64_t x173;
|
|
uint64_t x174;
|
|
fiat_p256_uint1 x175;
|
|
uint64_t x176;
|
|
fiat_p256_uint1 x177;
|
|
uint64_t x178;
|
|
fiat_p256_uint1 x179;
|
|
uint64_t x180;
|
|
fiat_p256_uint1 x181;
|
|
uint64_t x182;
|
|
fiat_p256_uint1 x183;
|
|
uint64_t x184;
|
|
uint64_t x185;
|
|
uint64_t x186;
|
|
uint64_t x187;
|
|
x1 = (arg1[1]);
|
|
x2 = (arg1[2]);
|
|
x3 = (arg1[3]);
|
|
x4 = (arg1[0]);
|
|
fiat_p256_mulx_u64(&x5, &x6, x4, (arg1[3]));
|
|
fiat_p256_mulx_u64(&x7, &x8, x4, (arg1[2]));
|
|
fiat_p256_mulx_u64(&x9, &x10, x4, (arg1[1]));
|
|
fiat_p256_mulx_u64(&x11, &x12, x4, (arg1[0]));
|
|
fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x12, x9);
|
|
fiat_p256_addcarryx_u64(&x15, &x16, x14, x10, x7);
|
|
fiat_p256_addcarryx_u64(&x17, &x18, x16, x8, x5);
|
|
x19 = (x18 + x6);
|
|
fiat_p256_mulx_u64(&x20, &x21, x11, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x22, &x23, x11, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x24, &x25, x11, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x26, &x27, 0x0, x25, x22);
|
|
x28 = (x27 + x23);
|
|
fiat_p256_addcarryx_u64(&x29, &x30, 0x0, x11, x24);
|
|
fiat_p256_addcarryx_u64(&x31, &x32, x30, x13, x26);
|
|
fiat_p256_addcarryx_u64(&x33, &x34, x32, x15, x28);
|
|
fiat_p256_addcarryx_u64(&x35, &x36, x34, x17, x20);
|
|
fiat_p256_addcarryx_u64(&x37, &x38, x36, x19, x21);
|
|
fiat_p256_mulx_u64(&x39, &x40, x1, (arg1[3]));
|
|
fiat_p256_mulx_u64(&x41, &x42, x1, (arg1[2]));
|
|
fiat_p256_mulx_u64(&x43, &x44, x1, (arg1[1]));
|
|
fiat_p256_mulx_u64(&x45, &x46, x1, (arg1[0]));
|
|
fiat_p256_addcarryx_u64(&x47, &x48, 0x0, x46, x43);
|
|
fiat_p256_addcarryx_u64(&x49, &x50, x48, x44, x41);
|
|
fiat_p256_addcarryx_u64(&x51, &x52, x50, x42, x39);
|
|
x53 = (x52 + x40);
|
|
fiat_p256_addcarryx_u64(&x54, &x55, 0x0, x31, x45);
|
|
fiat_p256_addcarryx_u64(&x56, &x57, x55, x33, x47);
|
|
fiat_p256_addcarryx_u64(&x58, &x59, x57, x35, x49);
|
|
fiat_p256_addcarryx_u64(&x60, &x61, x59, x37, x51);
|
|
fiat_p256_addcarryx_u64(&x62, &x63, x61, x38, x53);
|
|
fiat_p256_mulx_u64(&x64, &x65, x54, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x66, &x67, x54, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x68, &x69, x54, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x70, &x71, 0x0, x69, x66);
|
|
x72 = (x71 + x67);
|
|
fiat_p256_addcarryx_u64(&x73, &x74, 0x0, x54, x68);
|
|
fiat_p256_addcarryx_u64(&x75, &x76, x74, x56, x70);
|
|
fiat_p256_addcarryx_u64(&x77, &x78, x76, x58, x72);
|
|
fiat_p256_addcarryx_u64(&x79, &x80, x78, x60, x64);
|
|
fiat_p256_addcarryx_u64(&x81, &x82, x80, x62, x65);
|
|
x83 = ((uint64_t)x82 + x63);
|
|
fiat_p256_mulx_u64(&x84, &x85, x2, (arg1[3]));
|
|
fiat_p256_mulx_u64(&x86, &x87, x2, (arg1[2]));
|
|
fiat_p256_mulx_u64(&x88, &x89, x2, (arg1[1]));
|
|
fiat_p256_mulx_u64(&x90, &x91, x2, (arg1[0]));
|
|
fiat_p256_addcarryx_u64(&x92, &x93, 0x0, x91, x88);
|
|
fiat_p256_addcarryx_u64(&x94, &x95, x93, x89, x86);
|
|
fiat_p256_addcarryx_u64(&x96, &x97, x95, x87, x84);
|
|
x98 = (x97 + x85);
|
|
fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x75, x90);
|
|
fiat_p256_addcarryx_u64(&x101, &x102, x100, x77, x92);
|
|
fiat_p256_addcarryx_u64(&x103, &x104, x102, x79, x94);
|
|
fiat_p256_addcarryx_u64(&x105, &x106, x104, x81, x96);
|
|
fiat_p256_addcarryx_u64(&x107, &x108, x106, x83, x98);
|
|
fiat_p256_mulx_u64(&x109, &x110, x99, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x111, &x112, x99, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x113, &x114, x99, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x115, &x116, 0x0, x114, x111);
|
|
x117 = (x116 + x112);
|
|
fiat_p256_addcarryx_u64(&x118, &x119, 0x0, x99, x113);
|
|
fiat_p256_addcarryx_u64(&x120, &x121, x119, x101, x115);
|
|
fiat_p256_addcarryx_u64(&x122, &x123, x121, x103, x117);
|
|
fiat_p256_addcarryx_u64(&x124, &x125, x123, x105, x109);
|
|
fiat_p256_addcarryx_u64(&x126, &x127, x125, x107, x110);
|
|
x128 = ((uint64_t)x127 + x108);
|
|
fiat_p256_mulx_u64(&x129, &x130, x3, (arg1[3]));
|
|
fiat_p256_mulx_u64(&x131, &x132, x3, (arg1[2]));
|
|
fiat_p256_mulx_u64(&x133, &x134, x3, (arg1[1]));
|
|
fiat_p256_mulx_u64(&x135, &x136, x3, (arg1[0]));
|
|
fiat_p256_addcarryx_u64(&x137, &x138, 0x0, x136, x133);
|
|
fiat_p256_addcarryx_u64(&x139, &x140, x138, x134, x131);
|
|
fiat_p256_addcarryx_u64(&x141, &x142, x140, x132, x129);
|
|
x143 = (x142 + x130);
|
|
fiat_p256_addcarryx_u64(&x144, &x145, 0x0, x120, x135);
|
|
fiat_p256_addcarryx_u64(&x146, &x147, x145, x122, x137);
|
|
fiat_p256_addcarryx_u64(&x148, &x149, x147, x124, x139);
|
|
fiat_p256_addcarryx_u64(&x150, &x151, x149, x126, x141);
|
|
fiat_p256_addcarryx_u64(&x152, &x153, x151, x128, x143);
|
|
fiat_p256_mulx_u64(&x154, &x155, x144, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_mulx_u64(&x156, &x157, x144, UINT32_C(0xffffffff));
|
|
fiat_p256_mulx_u64(&x158, &x159, x144, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x160, &x161, 0x0, x159, x156);
|
|
x162 = (x161 + x157);
|
|
fiat_p256_addcarryx_u64(&x163, &x164, 0x0, x144, x158);
|
|
fiat_p256_addcarryx_u64(&x165, &x166, x164, x146, x160);
|
|
fiat_p256_addcarryx_u64(&x167, &x168, x166, x148, x162);
|
|
fiat_p256_addcarryx_u64(&x169, &x170, x168, x150, x154);
|
|
fiat_p256_addcarryx_u64(&x171, &x172, x170, x152, x155);
|
|
x173 = ((uint64_t)x172 + x153);
|
|
fiat_p256_subborrowx_u64(&x174, &x175, 0x0, x165, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_subborrowx_u64(&x176, &x177, x175, x167, UINT32_C(0xffffffff));
|
|
fiat_p256_subborrowx_u64(&x178, &x179, x177, x169, 0x0);
|
|
fiat_p256_subborrowx_u64(&x180, &x181, x179, x171, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_subborrowx_u64(&x182, &x183, x181, x173, 0x0);
|
|
fiat_p256_cmovznz_u64(&x184, x183, x174, x165);
|
|
fiat_p256_cmovznz_u64(&x185, x183, x176, x167);
|
|
fiat_p256_cmovznz_u64(&x186, x183, x178, x169);
|
|
fiat_p256_cmovznz_u64(&x187, x183, x180, x171);
|
|
out1[0] = x184;
|
|
out1[1] = x185;
|
|
out1[2] = x186;
|
|
out1[3] = x187;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_add adds two field elements in the Montgomery domain.
|
|
*
|
|
* Preconditions:
|
|
* 0 ≤ eval arg1 < m
|
|
* 0 ≤ eval arg2 < m
|
|
* Postconditions:
|
|
* eval (from_montgomery out1) mod m = (eval (from_montgomery arg1) + eval (from_montgomery arg2)) mod m
|
|
* 0 ≤ eval out1 < m
|
|
*
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_add(fiat_p256_montgomery_domain_field_element out1, const fiat_p256_montgomery_domain_field_element arg1, const fiat_p256_montgomery_domain_field_element arg2) {
|
|
uint64_t x1;
|
|
fiat_p256_uint1 x2;
|
|
uint64_t x3;
|
|
fiat_p256_uint1 x4;
|
|
uint64_t x5;
|
|
fiat_p256_uint1 x6;
|
|
uint64_t x7;
|
|
fiat_p256_uint1 x8;
|
|
uint64_t x9;
|
|
fiat_p256_uint1 x10;
|
|
uint64_t x11;
|
|
fiat_p256_uint1 x12;
|
|
uint64_t x13;
|
|
fiat_p256_uint1 x14;
|
|
uint64_t x15;
|
|
fiat_p256_uint1 x16;
|
|
uint64_t x17;
|
|
fiat_p256_uint1 x18;
|
|
uint64_t x19;
|
|
uint64_t x20;
|
|
uint64_t x21;
|
|
uint64_t x22;
|
|
fiat_p256_addcarryx_u64(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
|
|
fiat_p256_addcarryx_u64(&x3, &x4, x2, (arg1[1]), (arg2[1]));
|
|
fiat_p256_addcarryx_u64(&x5, &x6, x4, (arg1[2]), (arg2[2]));
|
|
fiat_p256_addcarryx_u64(&x7, &x8, x6, (arg1[3]), (arg2[3]));
|
|
fiat_p256_subborrowx_u64(&x9, &x10, 0x0, x1, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_subborrowx_u64(&x11, &x12, x10, x3, UINT32_C(0xffffffff));
|
|
fiat_p256_subborrowx_u64(&x13, &x14, x12, x5, 0x0);
|
|
fiat_p256_subborrowx_u64(&x15, &x16, x14, x7, UINT64_C(0xffffffff00000001));
|
|
fiat_p256_subborrowx_u64(&x17, &x18, x16, x8, 0x0);
|
|
fiat_p256_cmovznz_u64(&x19, x18, x9, x1);
|
|
fiat_p256_cmovznz_u64(&x20, x18, x11, x3);
|
|
fiat_p256_cmovznz_u64(&x21, x18, x13, x5);
|
|
fiat_p256_cmovznz_u64(&x22, x18, x15, x7);
|
|
out1[0] = x19;
|
|
out1[1] = x20;
|
|
out1[2] = x21;
|
|
out1[3] = x22;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_sub subtracts two field elements in the Montgomery domain.
|
|
*
|
|
* Preconditions:
|
|
* 0 ≤ eval arg1 < m
|
|
* 0 ≤ eval arg2 < m
|
|
* Postconditions:
|
|
* eval (from_montgomery out1) mod m = (eval (from_montgomery arg1) - eval (from_montgomery arg2)) mod m
|
|
* 0 ≤ eval out1 < m
|
|
*
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_sub(fiat_p256_montgomery_domain_field_element out1, const fiat_p256_montgomery_domain_field_element arg1, const fiat_p256_montgomery_domain_field_element arg2) {
|
|
uint64_t x1;
|
|
fiat_p256_uint1 x2;
|
|
uint64_t x3;
|
|
fiat_p256_uint1 x4;
|
|
uint64_t x5;
|
|
fiat_p256_uint1 x6;
|
|
uint64_t x7;
|
|
fiat_p256_uint1 x8;
|
|
uint64_t x9;
|
|
uint64_t x10;
|
|
fiat_p256_uint1 x11;
|
|
uint64_t x12;
|
|
fiat_p256_uint1 x13;
|
|
uint64_t x14;
|
|
fiat_p256_uint1 x15;
|
|
uint64_t x16;
|
|
fiat_p256_uint1 x17;
|
|
fiat_p256_subborrowx_u64(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
|
|
fiat_p256_subborrowx_u64(&x3, &x4, x2, (arg1[1]), (arg2[1]));
|
|
fiat_p256_subborrowx_u64(&x5, &x6, x4, (arg1[2]), (arg2[2]));
|
|
fiat_p256_subborrowx_u64(&x7, &x8, x6, (arg1[3]), (arg2[3]));
|
|
fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x10, &x11, 0x0, x1, x9);
|
|
fiat_p256_addcarryx_u64(&x12, &x13, x11, x3, (x9 & UINT32_C(0xffffffff)));
|
|
fiat_p256_addcarryx_u64(&x14, &x15, x13, x5, 0x0);
|
|
fiat_p256_addcarryx_u64(&x16, &x17, x15, x7, (x9 & UINT64_C(0xffffffff00000001)));
|
|
out1[0] = x10;
|
|
out1[1] = x12;
|
|
out1[2] = x14;
|
|
out1[3] = x16;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_opp negates a field element in the Montgomery domain.
|
|
*
|
|
* Preconditions:
|
|
* 0 ≤ eval arg1 < m
|
|
* Postconditions:
|
|
* eval (from_montgomery out1) mod m = -eval (from_montgomery arg1) mod m
|
|
* 0 ≤ eval out1 < m
|
|
*
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_opp(fiat_p256_montgomery_domain_field_element out1, const fiat_p256_montgomery_domain_field_element arg1) {
|
|
uint64_t x1;
|
|
fiat_p256_uint1 x2;
|
|
uint64_t x3;
|
|
fiat_p256_uint1 x4;
|
|
uint64_t x5;
|
|
fiat_p256_uint1 x6;
|
|
uint64_t x7;
|
|
fiat_p256_uint1 x8;
|
|
uint64_t x9;
|
|
uint64_t x10;
|
|
fiat_p256_uint1 x11;
|
|
uint64_t x12;
|
|
fiat_p256_uint1 x13;
|
|
uint64_t x14;
|
|
fiat_p256_uint1 x15;
|
|
uint64_t x16;
|
|
fiat_p256_uint1 x17;
|
|
fiat_p256_subborrowx_u64(&x1, &x2, 0x0, 0x0, (arg1[0]));
|
|
fiat_p256_subborrowx_u64(&x3, &x4, x2, 0x0, (arg1[1]));
|
|
fiat_p256_subborrowx_u64(&x5, &x6, x4, 0x0, (arg1[2]));
|
|
fiat_p256_subborrowx_u64(&x7, &x8, x6, 0x0, (arg1[3]));
|
|
fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
|
|
fiat_p256_addcarryx_u64(&x10, &x11, 0x0, x1, x9);
|
|
fiat_p256_addcarryx_u64(&x12, &x13, x11, x3, (x9 & UINT32_C(0xffffffff)));
|
|
fiat_p256_addcarryx_u64(&x14, &x15, x13, x5, 0x0);
|
|
fiat_p256_addcarryx_u64(&x16, &x17, x15, x7, (x9 & UINT64_C(0xffffffff00000001)));
|
|
out1[0] = x10;
|
|
out1[1] = x12;
|
|
out1[2] = x14;
|
|
out1[3] = x16;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_nonzero outputs a single non-zero word if the input is non-zero and zero otherwise.
|
|
*
|
|
* Preconditions:
|
|
* 0 ≤ eval arg1 < m
|
|
* Postconditions:
|
|
* out1 = 0 ↔ eval (from_montgomery arg1) mod m = 0
|
|
*
|
|
* Input Bounds:
|
|
* arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
|
|
* Output Bounds:
|
|
* out1: [0x0 ~> 0xffffffffffffffff]
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_nonzero(uint64_t* out1, const uint64_t arg1[4]) {
|
|
uint64_t x1;
|
|
x1 = ((arg1[0]) | ((arg1[1]) | ((arg1[2]) | (arg1[3]))));
|
|
*out1 = x1;
|
|
}
|
|
|
|
/*
|
|
* The function fiat_p256_selectznz is a multi-limb conditional select.
|
|
*
|
|
* Postconditions:
|
|
* eval out1 = (if arg1 = 0 then eval arg2 else eval arg3)
|
|
*
|
|
* Input Bounds:
|
|
* arg1: [0x0 ~> 0x1]
|
|
* arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
|
|
* arg3: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
|
|
* Output Bounds:
|
|
* out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
|
|
*/
|
|
static FIAT_P256_FIAT_INLINE void fiat_p256_selectznz(uint64_t out1[4], fiat_p256_uint1 arg1, const uint64_t arg2[4], const uint64_t arg3[4]) {
|
|
uint64_t x1;
|
|
uint64_t x2;
|
|
uint64_t x3;
|
|
uint64_t x4;
|
|
fiat_p256_cmovznz_u64(&x1, arg1, (arg2[0]), (arg3[0]));
|
|
fiat_p256_cmovznz_u64(&x2, arg1, (arg2[1]), (arg3[1]));
|
|
fiat_p256_cmovznz_u64(&x3, arg1, (arg2[2]), (arg3[2]));
|
|
fiat_p256_cmovznz_u64(&x4, arg1, (arg2[3]), (arg3[3]));
|
|
out1[0] = x1;
|
|
out1[1] = x2;
|
|
out1[2] = x3;
|
|
out1[3] = x4;
|
|
}
|
|
|