Better defaults for floats

- mantissa wide enough for double
- default tolerance at 1e-9
- (explicit int to silence compiler warning)

Author: jhenin

Makefile

@@ -79,7 +79,7 @@ HFILES=misc.h strings.h line.h float.h floatrep.h tol.h command.h comment.h toke
 OTHER=README Makefile Sample.1 Sample.2 Sample.3 Sample.4 paper.ms paper.out
 MANPAGE=spiff.1
 
-CFLAGS= $(OSFLAG) $(TFLAG) $(VISFLAG) -DNOCHATTER
+CFLAGS=$(OSFLAG) $(TFLAG) $(VISFLAG) -DNOCHATTER
 
 default: spiff
 

float.c

@@ -367,7 +367,7 @@ F_floatsub(p1,p2)
 F_float  p1,p2;
 {
 	static F_float result;
-	static needinit = 1;
+	static int needinit = 1;
 	static char man1[R_MANMAX],man2[R_MANMAX],diff[R_MANMAX];
 	int exp1,exp2;
 	char *diffptr,*big,*small;

floatrep.h

@@ -18,7 +18,7 @@
 **	when evaluated to a string, the fractional part will
 **		not exceed this length
 */
-#define R_MANMAX	200
+#define R_MANMAX	330 //accommodates max exponent of a double
 
 #define R_POSITIVE	0
 #define R_NEGATIVE	1

tol.h

@@ -26,8 +26,8 @@ typedef struct _T_tstr{
 #define _T_TOLMAX	10	/* number of tolerances that can
 					be in effect at one time */
 
-#define _T_ADEF		"1e-10"	/* default absolute tolerance */
-#define _T_RDEF		"1e-10"	/* default relative tolerance */
+#define _T_ADEF		"1e-9"	/* default absolute tolerance */
+#define _T_RDEF		"1e-9"	/* default relative tolerance */
 
 extern T_tol T_gettol();
 extern void T_clear_tols();