#include <sys/fcntl.h>
#endif
+#ifdef VOIDUSED
+# undef VOIDUSED
+#endif
#define VOIDUSED 1
+
#ifdef PERL_MICRO
# include "uconfig.h"
#else
# endif
#endif
+/* undef WIN32 when building on Cygwin (for libwin32) - gph */
+#ifdef __CYGWIN__
+# undef WIN32
+# undef _WIN32
+#endif
+
/* Use the reentrant APIs like localtime_r and getpwent_r */
/* Win32 has naturally threadsafe libraries, no need to use any _r variants. */
#if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32) && !defined(__APPLE__)
# endif
#endif
-#define Perl_atof(s) Perl_my_atof(s)
-#define Perl_atof2(s, np) Perl_my_atof2(s, np)
+/* The default is to use Perl's own atof() implementation (in numeric.c).
+ * Usually that is the one to use but for some platforms (e.g. UNICOS)
+ * it is however best to use the native implementation of atof.
+ * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
+ * Some good tests to try out with either setting are t/base/num.t,
+ * t/op/numconvert.t, and t/op/pack.t. */
+
+#ifndef USE_PERL_ATOF
+# ifndef _UNICOS
+# define USE_PERL_ATOF
+# endif
+#else
+# if USE_PERL_ATOF == 0
+# undef USE_PERL_ATOF
+# endif
+#endif
+
+#ifdef USE_PERL_ATOF
+# define Perl_atof(s) Perl_my_atof(s)
+# define Perl_atof2(s, n) Perl_my_atof2(aTHX_ (s), &(n))
+#else
+# define Perl_atof(s) (NV)atof(s)
+# define Perl_atof2(s, n) ((n) = atof(s))
+#endif
/* Previously these definitions used hardcoded figures.
* It is hoped these formula are more portable, although
# define Atoul(s) Strtoul(s, (char **)NULL, 10)
#endif
-#if !defined(PERLIO_IS_STDIO) && defined(HASATTRIBUTE)
+#if !defined(PERLIO_IS_STDIO)
/*
- * Now we have __attribute__ out of the way
* Remap printf
*/
#undef printf