mp_zero.c

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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.

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mp_zero.c

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

/* set to zero */
void mp_zero(mp_int *a)
{
   a->sign = MP_ZPOS;
   s_mp_zero_digs(a->dp, a->used);
   a->used = 0;
}
#endif

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c3-lang/libtommath/mp_zero.c

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mp_zero.c