kc3-lang/libtommath/bn_mp_shrink.c
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Hash : 4e3f1344
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Date : 2015-11-12T01:49:07
provide tommath_private.h tommath.h contains declarations for the public part of the library. tommath_private.h contains the functions which are private to ltm and should not be exposed to the public.
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bn_mp_shrink.c
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#include <tommath_private.h> #ifdef BN_MP_SHRINK_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, tstdenis82@gmail.com, http://libtom.org */ /* shrink a bignum */ int mp_shrink (mp_int * a) { mp_digit *tmp; int used = 1; if(a->used > 0) { used = a->used; } if (a->alloc != used) { if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * used)) == NULL) { return MP_MEM; } a->dp = tmp; a->alloc = used; } return MP_OKAY; } #endif /* $Source$ */ /* $Revision$ */ /* $Date$ */