tomsfastmath/src/bin/fp_read_signed_bin.c
2019-09-23 16:35:41 +02:00

17 lines
409 B
C

/* TomsFastMath, a fast ISO C bignum library. -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#include <tfm_private.h>
void fp_read_signed_bin(fp_int *a, const unsigned char *b, int c)
{
/* read magnitude */
fp_read_unsigned_bin (a, b + 1, c - 1);
/* first byte is 0 for positive, non-zero for negative */
if (b[0] == 0) {
a->sign = FP_ZPOS;
} else {
a->sign = FP_NEG;
}
}