diff options
Diffstat (limited to 'libtommath/bn_mp_2expt.c')
| -rw-r--r-- | libtommath/bn_mp_2expt.c | 29 |
1 files changed, 8 insertions, 21 deletions
diff --git a/libtommath/bn_mp_2expt.c b/libtommath/bn_mp_2expt.c index 54bd1d9..0ae3df1 100644 --- a/libtommath/bn_mp_2expt.c +++ b/libtommath/bn_mp_2expt.c @@ -1,44 +1,31 @@ #include "tommath_private.h" #ifdef BN_MP_2EXPT_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. - * - * SPDX-License-Identifier: Unlicense - */ +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ /* computes a = 2**b * * Simple algorithm which zeroes the int, grows it then just sets one bit * as required. */ -int mp_2expt(mp_int *a, int b) +mp_err mp_2expt(mp_int *a, int b) { - int res; + mp_err err; /* zero a as per default */ mp_zero(a); /* grow a to accomodate the single bit */ - if ((res = mp_grow(a, (b / DIGIT_BIT) + 1)) != MP_OKAY) { - return res; + if ((err = mp_grow(a, (b / MP_DIGIT_BIT) + 1)) != MP_OKAY) { + return err; } /* set the used count of where the bit will go */ - a->used = (b / DIGIT_BIT) + 1; + a->used = (b / MP_DIGIT_BIT) + 1; /* put the single bit in its place */ - a->dp[b / DIGIT_BIT] = (mp_digit)1 << (mp_digit)(b % DIGIT_BIT); + a->dp[b / MP_DIGIT_BIT] = (mp_digit)1 << (mp_digit)(b % MP_DIGIT_BIT); return MP_OKAY; } #endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */ |