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#include "inner.h"
/*
* ==========================(LICENSE BEGIN)============================
*
* Copyright (c) 2017-2019 Falcon Project
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* ===========================(LICENSE END)=============================
*/
unsigned set_fpu_cw(unsigned x) {
return x;
}
uint64_t prng_get_u64(prng *p) {
size_t u;
/*
* If there are less than 9 bytes in the buffer, we refill it.
* This means that we may drop the last few bytes, but this allows
* for faster extraction code. Also, it means that we never leave
* an empty buffer.
*/
u = p->ptr;
if (u >= (sizeof p->buf.d) - 9) {
PQCLEAN_FALCON1024_CLEAN_prng_refill(p);
u = 0;
}
p->ptr = u + 8;
return (uint64_t)p->buf.d[u + 0]
| ((uint64_t)p->buf.d[u + 1] << 8)
| ((uint64_t)p->buf.d[u + 2] << 16)
| ((uint64_t)p->buf.d[u + 3] << 24)
| ((uint64_t)p->buf.d[u + 4] << 32)
| ((uint64_t)p->buf.d[u + 5] << 40)
| ((uint64_t)p->buf.d[u + 6] << 48)
| ((uint64_t)p->buf.d[u + 7] << 56);
}
unsigned prng_get_u8(prng *p) {
unsigned v;
v = p->buf.d[p->ptr ++];
if (p->ptr == sizeof p->buf.d) {
PQCLEAN_FALCON1024_CLEAN_prng_refill(p);
}
return v;
}
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