New multiprecision integer arithmetic suite.

[u/mdw/catacomb] / mptext-file.c

diff --git a/mptext-file.c b/mptext-file.c
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+++ b/mptext-file.c
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+/* -*-c-*-
+ *
+ * $Id: mptext-file.c,v 1.1 1999/11/17 18:02:16 mdw Exp $
+ *
+ * Reading and writing large integers on files
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------* 
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ * 
+ * Catacomb 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 Library General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------* 
+ *
+ * $Log: mptext-file.c,v $
+ * Revision 1.1  1999/11/17 18:02:16  mdw
+ * New multiprecision integer arithmetic suite.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+
+#include "mptext.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- Operations table --- */
+
+static int get(void *p) { FILE *fp = p; return getc(fp); }
+
+static void unget(int ch, void *p) { FILE *fp = p; ungetc(ch, fp); }
+
+static int put(char *s, size_t sz, void *p)
+{
+  FILE *fp = p;
+  return (fwrite(s, 1, sz, fp) != sz);
+}
+
+const mptext_ops mptext_fileops = { get, unget, put };
+
+/* --- Convenience functions --- */
+
+mp *mp_readfile(mp *m, FILE *fp, int radix)
+{
+  return mp_read(m, radix, &mptext_fileops, fp);
+}
+
+int mp_writefile(mp *m, FILE *fp, int radix)
+{
+  return mp_write(m, radix, &mptext_fileops, fp);
+}
+
+/*----- That's all, folks -------------------------------------------------*/