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-rw-r--r--libtommath/bn_mp_fwrite.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/libtommath/bn_mp_fwrite.c b/libtommath/bn_mp_fwrite.c
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+++ b/libtommath/bn_mp_fwrite.c
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+#include <tommath.h>
+#ifdef BN_MP_FWRITE_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.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
+ */
+
+int mp_fwrite(mp_int *a, int radix, FILE *stream)
+{
+ char *buf;
+ int err, len, x;
+
+ if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
+ return err;
+ }
+
+ buf = OPT_CAST(char) XMALLOC (len);
+ if (buf == NULL) {
+ return MP_MEM;
+ }
+
+ if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
+ XFREE (buf);
+ return err;
+ }
+
+ for (x = 0; x < len; x++) {
+ if (fputc(buf[x], stream) == EOF) {
+ XFREE (buf);
+ return MP_VAL;
+ }
+ }
+
+ XFREE (buf);
+ return MP_OKAY;
+}
+
+#endif