/* -*-c-*-
*
- * $Id: mptext.h,v 1.2 1999/12/10 23:29:48 mdw Exp $
+ * $Id: mptext.h,v 1.7 2004/04/08 01:36:15 mdw Exp $
*
* Textual representation of multiprecision numbers
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: mptext.h,v $
- * Revision 1.2 1999/12/10 23:29:48 mdw
- * Change header file guard names.
- *
- * Revision 1.1 1999/11/17 18:02:16 mdw
- * New multiprecision integer arithmetic suite.
- *
- */
-
#ifndef CATACOMB_MPTEXT_H
#define CATACOMB_MPTEXT_H
typedef struct mptext_ops {
int (*get)(void */*p*/);
void (*unget)(int /*ch*/, void */*p*/);
- int (*put)(char */*s*/, size_t /*len*/, void */*p*/);
+ int (*put)(const char */*s*/, size_t /*len*/, void */*p*/);
} mptext_ops;
/*----- Functions provided ------------------------------------------------*/
extern int mp_write(mp */*m*/, int /*radix*/,
const mptext_ops */*ops*/, void */*p*/);
+/* --- @mptext_len@ --- *
+ *
+ * Arguments: @mp *x@ = number to work on
+ * @int r@ = radix the number will be expressed in
+ *
+ * Returns: The number of digits needed to represent the number in the
+ * given base. This will not include space for a leading sign
+ * (use @MP_ISNEG@ to check that, or just add one on for luck);
+ * neither will it add space for a terminating null. In general
+ * the answer will be an overestimate.
+ */
+
+extern size_t mptext_len(mp */*x*/, int /*r*/);
+
/*----- File I/O ----------------------------------------------------------*/
#include <stdio.h>
extern mp *mp_readfile(mp */*m*/, FILE */*fp*/, int /*radix*/);
extern int mp_writefile(mp */*m*/, FILE */*fp*/, int /*radix*/);
+#define MP_DOFPRINTFR(fp, args, m, r) do { \
+ fprintf args; \
+ if (m) \
+ mp_writefile(m, fp, r); \
+ else \
+ fputs("<null>", fp); \
+ fputc('\n', fp); \
+} while (0)
+
+#define MP_DOFPRINTR(fp, name, m, r) \
+ MP_DOFPRINTFR(fp, (fp, "%s = ", name), m, r)
+
+#define MP_PRINT(name, m) MP_DOFPRINTR(stdout, name, m, 10)
+#define MP_EPRINT(name, m) MP_DOFPRINTR(stderr, name, m, 10)
+#define MP_PRINTX(name, m) MP_DOFPRINTR(stdout, name, m, 16)
+#define MP_EPRINTX(name, m) MP_DOFPRINTR(stderr, name, m, 16)
+
+#define MP_FPRINTF(fp, args, m) MP_DOFPRINTFR(fp, args, m, 10)
+#define MP_FPRINTFX(fp, args, m) MP_DOFPRINTFR(fp, args, m, 16)
+
/*----- String I/O --------------------------------------------------------*/
/* --- Context format --- */