| #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@iahu.ca, http://math.libtomcrypt.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 |
