X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=numeric.c;h=0f353cffe8557221717fd7e6ba44903f321c6f2f;hb=e4c5ccf3177be837114b952c25e52a6812f35eb5;hp=a6386e85dd64b28fb9d4f4652b2147655c3445ef;hpb=e1ec3a884f8d8c64eb7e391b2a363f47cbeed570;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/numeric.c b/numeric.c
index a6386e8..0f353cf 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1,7 +1,7 @@
 /*    numeric.c
  *
  *    Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- *    2000, 2001, 2002, 2003, by Larry Wall and others
+ *    2000, 2001, 2002, 2003, 2005 by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -151,7 +151,7 @@ Perl_grok_bin(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) {
     NV value_nv = 0;
 
     const UV max_div_2 = UV_MAX / 2;
-    const bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
+    const bool allow_underscores = (bool)(*flags & PERL_SCAN_ALLOW_UNDERSCORES);
     bool overflowed = FALSE;
     char bit;
 
@@ -261,15 +261,15 @@ number may use '_' characters to separate digits.
 
 UV
 Perl_grok_hex(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) {
+    dVAR;
     const char *s = start;
     STRLEN len = *len_p;
     UV value = 0;
     NV value_nv = 0;
 
     const UV max_div_16 = UV_MAX / 16;
-    const bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
+    const bool allow_underscores = (bool)(*flags & PERL_SCAN_ALLOW_UNDERSCORES);
     bool overflowed = FALSE;
-    const char *hexdigit;
 
     if (!(*flags & PERL_SCAN_DISALLOW_PREFIX)) {
         /* strip off leading x or 0x.
@@ -288,7 +288,7 @@ Perl_grok_hex(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) {
     }
 
     for (; len-- && *s; s++) {
-        hexdigit = strchr(PL_hexdigit, *s);
+	const char *hexdigit = strchr(PL_hexdigit, *s);
         if (hexdigit) {
             /* Write it in this wonky order with a goto to attempt to get the
                compiler to make the common case integer-only loop pretty tight.
@@ -382,7 +382,7 @@ Perl_grok_oct(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) {
     NV value_nv = 0;
 
     const UV max_div_8 = UV_MAX / 8;
-    const bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
+    const bool allow_underscores = (bool)(*flags & PERL_SCAN_ALLOW_UNDERSCORES);
     bool overflowed = FALSE;
 
     for (; len-- && *s; s++) {
@@ -471,33 +471,33 @@ For backwards compatibility. Use C<grok_oct> instead.
  */
 
 NV
-Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
+Perl_scan_bin(pTHX_ const char *start, STRLEN len, STRLEN *retlen)
 {
     NV rnv;
     I32 flags = *retlen ? PERL_SCAN_ALLOW_UNDERSCORES : 0;
-    UV ruv = grok_bin (start, &len, &flags, &rnv);
+    const UV ruv = grok_bin (start, &len, &flags, &rnv);
 
     *retlen = len;
     return (flags & PERL_SCAN_GREATER_THAN_UV_MAX) ? rnv : (NV)ruv;
 }
 
 NV
-Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
+Perl_scan_oct(pTHX_ const char *start, STRLEN len, STRLEN *retlen)
 {
     NV rnv;
     I32 flags = *retlen ? PERL_SCAN_ALLOW_UNDERSCORES : 0;
-    UV ruv = grok_oct (start, &len, &flags, &rnv);
+    const UV ruv = grok_oct (start, &len, &flags, &rnv);
 
     *retlen = len;
     return (flags & PERL_SCAN_GREATER_THAN_UV_MAX) ? rnv : (NV)ruv;
 }
 
 NV
-Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
+Perl_scan_hex(pTHX_ const char *start, STRLEN len, STRLEN *retlen)
 {
     NV rnv;
     I32 flags = *retlen ? PERL_SCAN_ALLOW_UNDERSCORES : 0;
-    UV ruv = grok_hex (start, &len, &flags, &rnv);
+    const UV ruv = grok_hex (start, &len, &flags, &rnv);
 
     *retlen = len;
     return (flags & PERL_SCAN_GREATER_THAN_UV_MAX) ? rnv : (NV)ruv;
@@ -516,7 +516,7 @@ Perl_grok_numeric_radix(pTHX_ const char **sp, const char *send)
 #ifdef USE_LOCALE_NUMERIC
     if (PL_numeric_radix_sv && IN_LOCALE) { 
         STRLEN len;
-        char* radix = SvPV(PL_numeric_radix_sv, len);
+        const char* radix = SvPV(PL_numeric_radix_sv, len);
         if (*sp + len <= send && memEQ(*sp, radix, len)) {
             *sp += len;
             return TRUE; 
@@ -757,7 +757,7 @@ S_mulexp10(NV value, I32 exponent)
     if (exponent == 0)
 	return value;
     if (value == 0)
-	return 0;
+	return (NV)0;
 
     /* On OpenVMS VAX we by default use the D_FLOAT double format,
      * and that format does not have *easy* capabilities [1] for
@@ -893,6 +893,21 @@ Perl_my_atof2(pTHX_ const char* orig, NV* value)
 	    ++s;
     }
 
+    /* punt to strtod for NaN/Inf; if no support for it there, tough luck */
+
+#ifdef HAS_STRTOD
+    if (*s == 'n' || *s == 'N' || *s == 'i' || *s == 'I') {
+        const char *p = negative ? s - 1 : s;
+        char *endp;
+        NV rslt;
+        rslt = strtod(p, &endp);
+        if (endp != p) {
+            *value = rslt;
+            return (char *)endp;
+        }
+    }
+#endif
+
     /* we accumulate digits into an integer; when this becomes too
      * large, we add the total to NV and start again */
 
@@ -998,7 +1013,7 @@ Perl_my_atof2(pTHX_ const char* orig, NV* value)
 	result[2] = -result[2];
 #endif /* USE_PERL_ATOF */
     *value = result[2];
-    return s;
+    return (char *)s;
 }
 
 #if ! defined(HAS_MODFL) && defined(HAS_AINTL) && defined(HAS_COPYSIGNL)
@@ -1017,3 +1032,13 @@ Perl_my_frexpl(long double x, int *e) {
 	return (scalbnl(x, -*e));
 }
 #endif
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */