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adaption of mp_radeix_size to new mp_log_u32

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czurnieden 2019-10-15 20:48:37 +02:00 committed by Steffen Jaeckel
parent d4f6b43fa8
commit de606c034f
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GPG Key ID: AF0CB17621EDAD72
1 changed files with 4 additions and 10 deletions
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14
bn_mp_radix_size.c
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@ -7,7 +7,8 @@
mp_err mp_radix_size(const mp_int *a, int radix, int *size)
{
mp_err err;
mp_int a_, b;
mp_int a_;
uint32_t b;
/* make sure the radix is in range */
if ((radix < 2) || (radix > 64)) {
@ -19,25 +20,18 @@ mp_err mp_radix_size(const mp_int *a, int radix, int *size)
return MP_OKAY;
}
if ((err = mp_init(&b)) != MP_OKAY) {
goto LBL_ERR;
}
a_ = *a;
a_.sign = MP_ZPOS;
if ((err = mp_ilogb(&a_, (uint32_t)radix, &b)) != MP_OKAY) {
if ((err = mp_log_u32(&a_, (uint32_t)radix, &b)) != MP_OKAY) {
goto LBL_ERR;
}
*size = (int)mp_get_l(&b);
*size = (int)b;
/* mp_ilogb truncates to zero, hence we need one extra put on top and one for `\0`. */
*size += 2 + (a->sign == MP_NEG);
LBL_ERR:
mp_clear(&b);
return err;
}
#endif