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kc3-lang/libtommath/bn_mp_to_signed_bin.c

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  • Author : czurnieden
    Date : 2018-05-02 21:43:17
    Hash : 9034e712
    Message : Do not use installed headers for building

  • bn_mp_to_signed_bin.c
  • #include "tommath_private.h"
    #ifdef BN_MP_TO_SIGNED_BIN_C
    /* LibTomMath, multiple-precision integer library -- Tom St Denis
     *
     * LibTomMath is a library that provides multiple-precision
     * integer arithmetic as well as number theoretic functionality.
     *
     * The library was designed directly after the MPI library by
     * Michael Fromberger but has been written from scratch with
     * additional optimizations in place.
     *
     * The library is free for all purposes without any express
     * guarantee it works.
     */
    
    /* store in signed [big endian] format */
    int mp_to_signed_bin(const mp_int *a, unsigned char *b)
    {
       int     res;
    
       if ((res = mp_to_unsigned_bin(a, b + 1)) != MP_OKAY) {
          return res;
       }
       b[0] = (a->sign == MP_ZPOS) ? (unsigned char)0 : (unsigned char)1;
       return MP_OKAY;
    }
    #endif
    
    /* ref:         $Format:%D$ */
    /* git commit:  $Format:%H$ */
    /* commit time: $Format:%ai$ */