Donatien Garnier
A super trimmed down TLS stack, GPL licensed
Dependents: MiniTLS-HTTPS-Example
MiniTLS - A super trimmed down TLS/SSL Library for embedded devices Author: Donatien Garnier Copyright (C) 2013-2014 AppNearMe Ltd
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Diff: math/bin/fp_radix_size.c
- Revision:
- 4:cbaf466d717d
- Parent:
- 0:35aa5be3b78d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/math/bin/fp_radix_size.c Tue Jun 10 14:23:09 2014 +0000
@@ -0,0 +1,53 @@
+/* TomsFastMath, a fast ISO C bignum library.
+ *
+ * This project is meant to fill in where LibTomMath
+ * falls short. That is speed ;-)
+ *
+ * This project is public domain and free for all purposes.
+ *
+ * Tom St Denis, tomstdenis@gmail.com
+ */
+#include <tfm.h>
+
+int fp_radix_size(fp_int *a, int radix, int *size)
+{
+ int digs;
+ fp_int t;
+ fp_digit d;
+
+ *size = 0;
+
+ /* check range of the radix */
+ if (radix < 2 || radix > 64) {
+ return FP_VAL;
+ }
+
+ /* quick out if its zero */
+ if (fp_iszero(a) == 1) {
+ *size = 2;
+ return FP_OKAY;
+ }
+
+ fp_init_copy(&t, a);
+
+ /* if it is negative output a - */
+ if (t.sign == FP_NEG) {
+ (*size)++;
+ t.sign = FP_ZPOS;
+ }
+
+ digs = 0;
+ while (fp_iszero (&t) == FP_NO) {
+ fp_div_d (&t, (fp_digit) radix, &t, &d);
+ (*size)++;
+ }
+
+ /* append a NULL so the string is properly terminated */
+ (*size)++;
+ return FP_OKAY;
+
+}
+
+/* $Source: /cvs/libtom/tomsfastmath/src/bin/fp_radix_size.c,v $ */
+/* $Revision: 1.1 $ */
+/* $Date: 2006/12/31 21:25:53 $ */
