mpf_const_l10e.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_const_l10e(mp_float *a)
  16 {
  17    int err;
  18    if ((err = mpf_const_ln_d(a, 10)) != MP_OKAY) {
  19       return err;
  20    }
  21    return mpf_inv(a, a);
  22 }
  23                 /* log_10 e == 1/ln(e)      */
  24