view tomsfastmath/src/bin/fp_read_signed_bin.c @ 643:a362b62d38b2 dropbear-tfm

Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a with Makefile.in renamed
author Matt Johnston <matt@ucc.asn.au>
date Wed, 23 Nov 2011 18:10:20 +0700
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/* TomsFastMath, a fast ISO C bignum library.
 * 
 * This project is meant to fill in where LibTomMath
 * falls short.  That is speed ;-)
 *
 * This project is public domain and free for all purposes.
 * 
 * Tom St Denis, [email protected]
 */
#include <tfm.h>

void fp_read_signed_bin(fp_int *a, 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;
  }
}

/* $Source$ */
/* $Revision$ */
/* $Date$ */