mpf_neg.c

   1 /* LibTomFloat, multiple-precision floating-point library
   2  *
   3  * LibTomFloat is a library that provides multiple-precision
   4  * floating-point artihmetic as well as trigonometric functionality.
   5  *
   6  * This library requires the public domain LibTomMath to be installed.
   7  *
   8  * This library is free for all purposes without any express
   9  * gurantee it works
  10  *
  11  * Tom St Denis, tomstdenis@iahu.ca, http://float.libtomcrypt.org
  12  */
  13 #include <tomfloat.h>
  14
  15 int  mpf_neg(mp_float *a, mp_float *b)
  16 {
  17    int err;
  18    if ((err = mp_neg((&a->mantissa), &(b->mantissa))) != MP_OKAY) {
  19       return err;
  20    }
  21    b->exp = a->exp;
  22    return mpf_normalize(b);
  23 }