Mercurial > dropbear
view libtommath/bn_mp_init.c @ 1088:f2a3570b5110
Test struct existance against sizeof() operator
Instead of declaring an "unused-variable" or "unused-but-set-variable"
structure.
This avoid unexpected broken configurations when using something like:
$ ./configure CFLAGS="-Wall -Wextra -Werror"
It causes AC_COMPILE_IFELSE to fail and thus leading to a mismatch
configuration (because the CFLAGS are passed to the macro).
author | Gaël PORTAY <gael.portay@gmail.com> |
---|---|
date | Sat, 02 May 2015 13:33:34 +0200 |
parents | 5ff8218bcee9 |
children | 60fc6476e044 |
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#include <tommath.h> #ifdef BN_MP_INIT_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. * * Tom St Denis, [email protected], http://math.libtomcrypt.com */ /* init a new mp_int */ int mp_init (mp_int * a) { int i; /* allocate memory required and clear it */ a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); if (a->dp == NULL) { return MP_MEM; } /* set the digits to zero */ for (i = 0; i < MP_PREC; i++) { a->dp[i] = 0; } /* set the used to zero, allocated digits to the default precision * and sign to positive */ a->used = 0; a->alloc = MP_PREC; a->sign = MP_ZPOS; return MP_OKAY; } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_init.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2006/03/31 14:18:44 $ */