public/tomsfastmath
3
0
Fork 0
forked from ibphoenix/tomsfastmath
Code Releases Activity

fp_read_radix: port modifications from libtommath

Browse Source
This commit is contained in:
Steffen Jaeckel 2014-06-15 18:35:31 +02:00
parent 74df3d9970
commit 60cf64919f
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/bin/fp_read_radix.c
View File

@ -1,10 +1,10 @@
/* TomsFastMath, a fast ISO C bignum library. /* TomsFastMath, a fast ISO C bignum library.
* *
* This project is meant to fill in where LibTomMath * This project is meant to fill in where LibTomMath
* falls short. That is speed ;-) * falls short. That is speed ;-)
* *
* This project is public domain and free for all purposes. * This project is public domain and free for all purposes.
* *
* Tom St Denis, tomstdenis@gmail.com * Tom St Denis, tomstdenis@gmail.com
*/ */
#include <tfm.h> #include <tfm.h>
@ -14,6 +14,9 @@ int fp_read_radix(fp_int *a, char *str, int radix)
int y, neg; int y, neg;
char ch; char ch;
/* set the integer to the default of zero */
fp_zero (a);
/* make sure the radix is ok */ /* make sure the radix is ok */
if (radix < 2 || radix > 64) { if (radix < 2 || radix > 64) {
return FP_VAL; return FP_VAL;
@ -29,16 +32,13 @@ int fp_read_radix(fp_int *a, char *str, int radix)
neg = FP_ZPOS; neg = FP_ZPOS;
} }
/* set the integer to the default of zero */
fp_zero (a);
/* process each digit of the string */ /* process each digit of the string */
while (*str) { while (*str) {
/* if the radix < 36 the conversion is case insensitive /* if the radix < 36 the conversion is case insensitive
* this allows numbers like 1AB and 1ab to represent the same value * this allows numbers like 1AB and 1ab to represent the same value
* [e.g. in hex] * [e.g. in hex]
*/ */
ch = (char) ((radix < 36) ? toupper ((int)*str) : *str); ch = (char) ((radix <= 36) ? toupper ((int)*str) : *str);
for (y = 0; y < 64; y++) { for (y = 0; y < 64; y++) {
if (ch == fp_s_rmap[y]) { if (ch == fp_s_rmap[y]) {
break; break;