- handle sign of negative zero. use sign dtoa sets

- remove 'value < 0' cruft, dtoa already clears sign bit for us
discussed with, and tested by phessler@
ok millert@, who noticed to remove now-unused variable, and phessler@

diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c
index bdbb7c1..fd2b944 100644 (file)
--- a/lib/libc/stdio/vfprintf.c
+++ b/lib/libc/stdio/vfprintf.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vfprintf.c,v 1.47 2008/05/16 20:42:52 millert Exp $   */
+/*     $OpenBSD: vfprintf.c,v 1.48 2008/07/10 18:18:55 martynas Exp $  */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -149,7 +149,7 @@ __sbprintf(FILE *fp, const char *fmt, va_list ap)
 
 extern char *__dtoa(double, int, int, int *, int *, char **);
 extern void  __freedtoa(char *);
-static char *cvt(double, int, int, char *, int *, int, int *);
+static char *cvt(double, int, int, int *, int *, int, int *);
 static int exponent(char *, int, int);
 
 #else /* no FLOATING_POINT */
@@ -200,7 +200,7 @@ vfprintf(FILE *fp, const char *fmt0, __va_list ap)
        mbstate_t ps;
 #ifdef FLOATING_POINT
        char *decimal_point = localeconv()->decimal_point;
-       char softsign;          /* temporary negative sign for floats */
+       int softsign;           /* temporary negative sign for floats */
        double _double;         /* double precision arguments %[eEfgG] */
        int expt;               /* integer value of exponent */
        int expsize;            /* character count for expstr */
@@ -1257,10 +1257,10 @@ __grow_type_table(unsigned char **typetable, int *tablesize)
 #ifdef FLOATING_POINT
 
 static char *
-cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch, 
+cvt(double value, int ndigits, int flags, int *sign, int *decpt, int ch, 
     int *length)
 {
-       int mode, dsgn;
+       int mode;
        char *digits, *bp, *rve;
 
        if (ch == 'f') {
@@ -1276,12 +1276,7 @@ cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch,
                mode = 2;               /* ndigits significant digits */
        }
 
-       if (value < 0) {
-               value = -value;
-               *sign = '-';
-       } else
-               *sign = '\000';
-       digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
+       digits = __dtoa(value, mode, ndigits, decpt, sign, &rve);
        if ((ch != 'g' && ch != 'G') || flags & ALT) {/* Print trailing zeros */
                bp = digits + ndigits;
                if (ch == 'f') {