diff options
Diffstat (limited to 'libtommath/bn_mp_grow.c')
| -rw-r--r-- | libtommath/bn_mp_grow.c | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/libtommath/bn_mp_grow.c b/libtommath/bn_mp_grow.c index cf2b949..1ea3eb3 100644 --- a/libtommath/bn_mp_grow.c +++ b/libtommath/bn_mp_grow.c @@ -16,39 +16,40 @@ */ /* grow as required */ -int mp_grow (mp_int * a, int size) +int mp_grow(mp_int * a, int size) { - int i; - mp_digit *tmp; + int i; + mp_digit *tmp; - /* if the alloc size is smaller alloc more ram */ - if (a->alloc < size) { - /* ensure there are always at least MP_PREC digits extra on top */ - size += (MP_PREC * 2) - (size % MP_PREC); + /* if the alloc size is smaller alloc more ram */ + if (a->alloc < size) { + /* ensure there are always at least MP_PREC digits extra on top */ + size += (MP_PREC * 2) - (size % MP_PREC); - /* reallocate the array a->dp - * - * We store the return in a temporary variable - * in case the operation failed we don't want - * to overwrite the dp member of a. - */ - tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * size); - if (tmp == NULL) { - /* reallocation failed but "a" is still valid [can be freed] */ - return MP_MEM; - } + /* reallocate the array a->dp + * + * We store the return in a temporary variable + * in case the operation failed we don't want + * to overwrite the dp member of a. + */ + tmp = + OPT_CAST(mp_digit) XREALLOC(a->dp, sizeof(mp_digit) * size); + if (tmp == NULL) { + /* reallocation failed but "a" is still valid [can be freed] */ + return MP_MEM; + } - /* reallocation succeeded so set a->dp */ - a->dp = tmp; + /* reallocation succeeded so set a->dp */ + a->dp = tmp; - /* zero excess digits */ - i = a->alloc; - a->alloc = size; - for (; i < a->alloc; i++) { - a->dp[i] = 0; - } - } - return MP_OKAY; + /* zero excess digits */ + i = a->alloc; + a->alloc = size; + for (; i < a->alloc; i++) { + a->dp[i] = 0; + } + } + return MP_OKAY; } #endif |