diff options
Diffstat (limited to 'libtommath/bn_mp_read_radix.c')
| -rw-r--r-- | libtommath/bn_mp_read_radix.c | 39 |
1 files changed, 15 insertions, 24 deletions
diff --git a/libtommath/bn_mp_read_radix.c b/libtommath/bn_mp_read_radix.c index c3119d0..de18e06 100644 --- a/libtommath/bn_mp_read_radix.c +++ b/libtommath/bn_mp_read_radix.c @@ -1,23 +1,18 @@ #include "tommath_private.h" #ifdef BN_MP_READ_RADIX_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 */ + +#define MP_TOUPPER(c) ((((c) >= 'a') && ((c) <= 'z')) ? (((c) + 'A') - 'a') : (c)) /* read a string [ASCII] in a given radix */ -int mp_read_radix(mp_int *a, const char *str, int radix) +mp_err mp_read_radix(mp_int *a, const char *str, int radix) { - int y, res, neg; + mp_err err; + int y; + mp_sign neg; unsigned pos; - char ch; + char ch; /* zero the digit bignum */ mp_zero(a); @@ -46,7 +41,7 @@ int mp_read_radix(mp_int *a, const char *str, int radix) * this allows numbers like 1AB and 1ab to represent the same value * [e.g. in hex] */ - ch = (radix <= 36) ? (char)toupper((int)*str) : *str; + ch = (radix <= 36) ? (char)MP_TOUPPER((int)*str) : *str; pos = (unsigned)(ch - '('); if (mp_s_rmap_reverse_sz < pos) { break; @@ -60,11 +55,11 @@ int mp_read_radix(mp_int *a, const char *str, int radix) if ((y == 0xff) || (y >= radix)) { break; } - if ((res = mp_mul_d(a, (mp_digit)radix, a)) != MP_OKAY) { - return res; + if ((err = mp_mul_d(a, (mp_digit)radix, a)) != MP_OKAY) { + return err; } - if ((res = mp_add_d(a, (mp_digit)y, a)) != MP_OKAY) { - return res; + if ((err = mp_add_d(a, (mp_digit)y, a)) != MP_OKAY) { + return err; } ++str; } @@ -76,13 +71,9 @@ int mp_read_radix(mp_int *a, const char *str, int radix) } /* set the sign only if a != 0 */ - if (mp_iszero(a) != MP_YES) { + if (!MP_IS_ZERO(a)) { a->sign = neg; } return MP_OKAY; } #endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */ |