-rw-r--r-- 918 libmceliece-20240726/crypto_kem/348864/vec/vec.h raw
#ifndef VEC_H
#define VEC_H
#define vec_inv CRYPTO_NAMESPACE(vec_inv)
#define vec_mul CRYPTO_NAMESPACE(vec_mul)
#define vec_sq CRYPTO_NAMESPACE(vec_sq)
#include "params.h"
#include <stdint.h>
typedef uint64_t vec;
static inline vec vec_setbits(vec b)
{
vec ret = -b;
return ret;
}
static inline vec vec_set1_16b(uint16_t v)
{
vec ret;
ret = v;
ret |= ret << 16;
ret |= ret << 32;
return ret;
}
static inline void vec_copy(vec * out, vec * in)
{
int i;
for (i = 0; i < GFBITS; i++)
out[i] = in[i];
}
static inline vec vec_or_reduce(vec * a)
{
int i;
vec ret;
ret = a[0];
for (i = 1; i < GFBITS; i++)
ret |= a[i];
return ret;
}
static inline int vec_testz(vec a)
{
a |= a >> 32;
a |= a >> 16;
a |= a >> 8;
a |= a >> 4;
a |= a >> 2;
a |= a >> 1;
return (a&1)^1;
}
void vec_mul(vec *, const vec *, const vec *);
void vec_sq(vec *, vec *);
void vec_inv(vec *, vec *);
#endif