s_mp_zero_buf.c

Branch

Show log
Commit

Hash : 795cd201
Author :
Date : 2019-10-29T21:48:50

simplifications: add s_mp_zero_(digs|buf) and s_mp_copy_digs

Originally I made those as macros. However we have many
other small functions like mp_clamp, mp_exch which are also not implemented
as macros right now.

If we would use c99, I would implement them as private static inline
functions. And mp_exch would be a public static inline function.

But since we are bound to c89, we simply use normal functions.
To achieve optimal performance one should either use link time
optimization or amalgamation.

Download

s_mp_zero_buf.c

#include "tommath_private.h"
#ifdef S_MP_ZERO_BUF_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

#ifdef MP_USE_MEMOPS
#  include <string.h>
#endif

void s_mp_zero_buf(void *mem, size_t size)
{
#ifdef MP_USE_MEMOPS
   memset(mem, 0, size);
#else
   char *m = (char *)mem;
   while (size-- > 0u) {
      *m++ = '\0';
   }
#endif
}

#endif

Download

c3-lang/libtommath/s_mp_zero_buf.c

Commit

s_mp_zero_buf.c