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/*
Copyright (c) INRIA and Microsoft Corporation. All rights reserved.
Licensed under the Apache 2.0 License.
*/
#ifndef __FStar_UInt128_Verified_H
#define __FStar_UInt128_Verified_H
#include <inttypes.h>
#include <stdbool.h>
#include "FStar_UInt_8_16_32_64.h"
#include "krml/internal/target.h"
#include "krml/internal/types.h"
static inline uint64_t
FStar_UInt128_constant_time_carry(uint64_t a,
uint64_t b)
{
return (a ^ ((a ^ b) | ((a - b) ^ b))) >> 63U;
}
static inline uint64_t
FStar_UInt128_carry(uint64_t a, uint64_t b)
{
return FStar_UInt128_constant_time_carry(a, b);
}
static inline FStar_UInt128_uint128
FStar_UInt128_add(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low + b.low;
lit.high = a.high + b.high + FStar_UInt128_carry(a.low + b.low, b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_add_underspec(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low + b.low;
lit.high = a.high + b.high + FStar_UInt128_carry(a.low + b.low, b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_add_mod(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low + b.low;
lit.high = a.high + b.high + FStar_UInt128_carry(a.low + b.low, b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_sub(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low - b.low;
lit.high = a.high - b.high - FStar_UInt128_carry(a.low, a.low - b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_sub_underspec(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low - b.low;
lit.high = a.high - b.high - FStar_UInt128_carry(a.low, a.low - b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_sub_mod_impl(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low - b.low;
lit.high = a.high - b.high - FStar_UInt128_carry(a.low, a.low - b.low);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_sub_mod(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
return FStar_UInt128_sub_mod_impl(a, b);
}
static inline FStar_UInt128_uint128
FStar_UInt128_logand(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low & b.low;
lit.high = a.high & b.high;
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_logxor(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low ^ b.low;
lit.high = a.high ^ b.high;
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_logor(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = a.low | b.low;
lit.high = a.high | b.high;
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_lognot(
FStar_UInt128_uint128 a)
{
FStar_UInt128_uint128 lit;
lit.low = ~a.low;
lit.high = ~a.high;
return lit;
}
static uint32_t FStar_UInt128_u32_64 = 64U;
static inline uint64_t
FStar_UInt128_add_u64_shift_left(uint64_t hi,
uint64_t lo,
uint32_t s)
{
return (hi << s) + (lo >> (FStar_UInt128_u32_64 - s));
}
static inline uint64_t
FStar_UInt128_add_u64_shift_left_respec(uint64_t hi,
uint64_t lo,
uint32_t s)
{
return FStar_UInt128_add_u64_shift_left(hi, lo, s);
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_left_small(
FStar_UInt128_uint128 a, uint32_t s)
{
if (s == 0U) {
return a;
} else {
FStar_UInt128_uint128 lit;
lit.low = a.low << s;
lit.high = FStar_UInt128_add_u64_shift_left_respec(a.high, a.low, s);
return lit;
}
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_left_large(
FStar_UInt128_uint128 a, uint32_t s)
{
FStar_UInt128_uint128 lit;
lit.low = 0ULL;
lit.high = a.low << (s - FStar_UInt128_u32_64);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_left(
FStar_UInt128_uint128 a, uint32_t s)
{
if (s < FStar_UInt128_u32_64) {
return FStar_UInt128_shift_left_small(a, s);
} else {
return FStar_UInt128_shift_left_large(a, s);
}
}
static inline uint64_t
FStar_UInt128_add_u64_shift_right(uint64_t hi,
uint64_t lo,
uint32_t s)
{
return (lo >> s) + (hi << (FStar_UInt128_u32_64 - s));
}
static inline uint64_t
FStar_UInt128_add_u64_shift_right_respec(uint64_t hi,
uint64_t lo,
uint32_t s)
{
return FStar_UInt128_add_u64_shift_right(hi, lo, s);
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_right_small(
FStar_UInt128_uint128 a, uint32_t s)
{
if (s == 0U) {
return a;
} else {
FStar_UInt128_uint128 lit;
lit.low = FStar_UInt128_add_u64_shift_right_respec(a.high, a.low, s);
lit.high = a.high >> s;
return lit;
}
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_right_large(
FStar_UInt128_uint128 a, uint32_t s)
{
FStar_UInt128_uint128 lit;
lit.low = a.high >> (s - FStar_UInt128_u32_64);
lit.high = 0ULL;
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_shift_right(
FStar_UInt128_uint128 a, uint32_t s)
{
if (s < FStar_UInt128_u32_64) {
return FStar_UInt128_shift_right_small(a, s);
} else {
return FStar_UInt128_shift_right_large(a, s);
}
}
static inline bool
FStar_UInt128_eq(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
return a.low == b.low && a.high == b.high;
}
static inline bool
FStar_UInt128_gt(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
return a.high > b.high || (a.high == b.high && a.low > b.low);
}
static inline bool
FStar_UInt128_lt(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
return a.high < b.high || (a.high == b.high && a.low < b.low);
}
static inline bool
FStar_UInt128_gte(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
return a.high > b.high || (a.high == b.high && a.low >= b.low);
}
static inline bool
FStar_UInt128_lte(FStar_UInt128_uint128 a,
FStar_UInt128_uint128 b)
{
return a.high < b.high || (a.high == b.high && a.low <= b.low);
}
static inline FStar_UInt128_uint128
FStar_UInt128_eq_mask(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low =
FStar_UInt64_eq_mask(a.low, b.low) & FStar_UInt64_eq_mask(a.high, b.high);
lit.high =
FStar_UInt64_eq_mask(a.low, b.low) & FStar_UInt64_eq_mask(a.high, b.high);
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_gte_mask(
FStar_UInt128_uint128 a, FStar_UInt128_uint128 b)
{
FStar_UInt128_uint128 lit;
lit.low = (FStar_UInt64_gte_mask(a.high, b.high) &
~FStar_UInt64_eq_mask(a.high, b.high)) |
(FStar_UInt64_eq_mask(a.high, b.high) &
FStar_UInt64_gte_mask(a.low, b.low));
lit.high = (FStar_UInt64_gte_mask(a.high, b.high) &
~FStar_UInt64_eq_mask(a.high, b.high)) |
(FStar_UInt64_eq_mask(a.high, b.high) &
FStar_UInt64_gte_mask(a.low, b.low));
return lit;
}
static inline FStar_UInt128_uint128
FStar_UInt128_uint64_to_uint128(
uint64_t a)
{
FStar_UInt128_uint128 lit;
lit.low = a;
lit.high = 0ULL;
return lit;
}
static inline uint64_t
FStar_UInt128_uint128_to_uint64(
FStar_UInt128_uint128 a)
{
return a.low;
}
static inline uint64_t
FStar_UInt128_u64_mod_32(uint64_t a)
{
return a & 0xffffffffULL;
}
static uint32_t FStar_UInt128_u32_32 = 32U;
static inline uint64_t
FStar_UInt128_u32_combine(uint64_t hi, uint64_t lo)
{
return lo + (hi << FStar_UInt128_u32_32);
}
static inline FStar_UInt128_uint128
FStar_UInt128_mul32(uint64_t x,
uint32_t y)
{
FStar_UInt128_uint128 lit;
lit.low = FStar_UInt128_u32_combine(
(x >> FStar_UInt128_u32_32) * (uint64_t)y +
(FStar_UInt128_u64_mod_32(x) * (uint64_t)y >> FStar_UInt128_u32_32),
FStar_UInt128_u64_mod_32(FStar_UInt128_u64_mod_32(x) * (uint64_t)y));
lit.high =
((x >> FStar_UInt128_u32_32) * (uint64_t)y +
(FStar_UInt128_u64_mod_32(x) * (uint64_t)y >> FStar_UInt128_u32_32)) >>
FStar_UInt128_u32_32;
return lit;
}
static inline uint64_t
FStar_UInt128_u32_combine_(uint64_t hi, uint64_t lo)
{
return lo + (hi << FStar_UInt128_u32_32);
}
static inline FStar_UInt128_uint128
FStar_UInt128_mul_wide(uint64_t x,
uint64_t y)
{
FStar_UInt128_uint128 lit;
lit.low = FStar_UInt128_u32_combine_(
FStar_UInt128_u64_mod_32(x) * (y >> FStar_UInt128_u32_32) +
FStar_UInt128_u64_mod_32(
(x >> FStar_UInt128_u32_32) * FStar_UInt128_u64_mod_32(y) +
(FStar_UInt128_u64_mod_32(x) * FStar_UInt128_u64_mod_32(y) >>
FStar_UInt128_u32_32)),
FStar_UInt128_u64_mod_32(FStar_UInt128_u64_mod_32(x) *
FStar_UInt128_u64_mod_32(y)));
lit.high = (x >> FStar_UInt128_u32_32) * (y >> FStar_UInt128_u32_32) +
(((x >> FStar_UInt128_u32_32) * FStar_UInt128_u64_mod_32(y) +
(FStar_UInt128_u64_mod_32(x) * FStar_UInt128_u64_mod_32(y) >>
FStar_UInt128_u32_32)) >>
FStar_UInt128_u32_32) +
((FStar_UInt128_u64_mod_32(x) * (y >> FStar_UInt128_u32_32) +
FStar_UInt128_u64_mod_32(
(x >> FStar_UInt128_u32_32) * FStar_UInt128_u64_mod_32(y) +
(FStar_UInt128_u64_mod_32(x) * FStar_UInt128_u64_mod_32(y) >>
FStar_UInt128_u32_32))) >>
FStar_UInt128_u32_32);
return lit;
}
#define __FStar_UInt128_Verified_H_DEFINED
#endif