diff options
Diffstat (limited to 'crypto/userspace/libtommath/bn_mp_shrink.c')
| -rw-r--r-- | crypto/userspace/libtommath/bn_mp_shrink.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/crypto/userspace/libtommath/bn_mp_shrink.c b/crypto/userspace/libtommath/bn_mp_shrink.c new file mode 100644 index 00000000000..4b8c5ef11ad --- /dev/null +++ b/crypto/userspace/libtommath/bn_mp_shrink.c @@ -0,0 +1,35 @@ +#include <tommath.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, tomstdenis@gmail.com, http://libtom.org + */ + +/* shrink a bignum */ +int mp_shrink (mp_int * a) +{ + mp_digit *tmp; + if (a->alloc != a->used && a->used > 0) { + if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * a->used)) == NULL) { + return MP_MEM; + } + a->dp = tmp; + a->alloc = a->used; + } + return MP_OKAY; +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_shrink.c,v $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/12/28 01:25:13 $ */ |