sv.h: Make BmUSEFUL the same type on debug/non-debug builds

[perl5.git] / numeric.c

diff --git a/numeric.c b/numeric.c
index be86f3a..e96252a 100644 (file)
--- a/numeric.c
+++ b/numeric.c
@@ -803,7 +803,7 @@ S_mulexp10(NV value, I32 exponent)
      * a hammer.  Therefore we need to catch potential overflows before
      * it's too late. */
 
-#if ((defined(VMS) && !defined(__IEEE_FP)) || defined(_UNICOS)) && defined(NV_MAX_10_EXP)
+#if ((defined(VMS) && !defined(_IEEE_FP)) || defined(_UNICOS)) && defined(NV_MAX_10_EXP)
     STMT_START {
        const NV exp_v = log10(value);
        if (exponent >= NV_MAX_10_EXP || exponent + exp_v >= NV_MAX_10_EXP)
@@ -847,17 +847,28 @@ Perl_my_atof(pTHX_ const char* s)
 
     PERL_ARGS_ASSERT_MY_ATOF;
 
-    if (PL_numeric_local && IN_SOME_LOCALE_FORM) {
-       NV y;
+    if (PL_numeric_local && PL_numeric_radix_sv && IN_SOME_LOCALE_FORM) {
+        const char *standard = NULL, *local = NULL;
+        bool use_standard_radix;
 
-       /* Scan the number twice; once using locale and once without;
-        * choose the larger result (in absolute value). */
-       Perl_atof2(s, x);
-       SET_NUMERIC_STANDARD();
-       Perl_atof2(s, y);
-       SET_NUMERIC_LOCAL();
-       if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
-           return y;
+        /* Look through the string for the first thing that looks like a
+         * decimal point: either the value in the current locale or the
+         * standard fallback of '.'. The one which appears earliest in the
+         * input string is the one that we should have atof look for. Note that
+         * we have to determine this beforehand because on some systems,
+         * Perl_atof2 is just a wrapper around the system's atof. */
+        standard = strchr(s, '.');
+        local = strstr(s, SvPV_nolen(PL_numeric_radix_sv));
+
+        use_standard_radix = standard && (!local || standard < local);
+
+        if (use_standard_radix)
+            SET_NUMERIC_STANDARD();
+
+        Perl_atof2(s, x);
+
+        if (use_standard_radix)
+            SET_NUMERIC_LOCAL();
     }
     else
        Perl_atof2(s, x);