Diff: math/bin/fp_read_signed_bin.c

Revision:

4:cbaf466d717d

Parent:

0:35aa5be3b78d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/math/bin/fp_read_signed_bin.c	Tue Jun 10 14:23:09 2014 +0000
@@ -0,0 +1,27 @@
+/* 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>
+
+void fp_read_signed_bin(fp_int *a, unsigned char *b, int c)
+{
+  /* read magnitude */
+  fp_read_unsigned_bin (a, b + 1, c - 1);
+
+  /* first byte is 0 for positive, non-zero for negative */
+  if (b[0] == 0) {
+     a->sign = FP_ZPOS;
+  } else {
+     a->sign = FP_NEG;
+  }
+}
+
+/* $Source: /cvs/libtom/tomsfastmath/src/bin/fp_read_signed_bin.c,v $ */
+/* $Revision: 1.1 $ */
+/* $Date: 2006/12/31 21:25:53 $ */