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-rw-r--r--perl.h148
1 files changed, 139 insertions, 9 deletions
diff --git a/perl.h b/perl.h
index 82694489bc..cba24be1a4 100644
--- a/perl.h
+++ b/perl.h
@@ -1299,13 +1299,14 @@ typedef NVTYPE NV;
# else
# define Perl_frexp(x,y) ((long double)frexp((double)(x),y))
# endif
-# ifdef HAS_ISNANL
-# define Perl_isnan(x) isnanl(x)
-# else
-# ifdef HAS_ISNAN
-# define Perl_isnan(x) isnan((double)(x))
-# else
-# define Perl_isnan(x) ((x)!=(x))
+# ifndef Perl_isinf
+# ifdef HAS_ISNANL
+# define Perl_isnan(x) isnanl(x)
+# endif
+# endif
+# ifndef Perl_isinf
+# ifdef HAS_FINITEL
+# define Perl_isinf(x) !(finitel(x)||Perl_isnan(x))
# endif
# endif
#else
@@ -1332,10 +1333,139 @@ typedef NVTYPE NV;
# define Perl_fmod fmod
# define Perl_modf(x,y) modf(x,y)
# define Perl_frexp(x,y) frexp(x,y)
+#endif
+
+/* rumor has it that Win32 has _fpclass() */
+
+#if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
+# ifdef I_IEEFP
+# include <ieeefp.h>
+# endif
+# ifdef I_FP
+# include <fp.h>
+# endif
+# if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
+# define Perl_fp_class() fpclassl(x)
+# else
+# define Perl_fp_class() fpclass(x)
+# endif
+# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
+# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
+# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_CLASS_SNAN||Perl_fp_class(x)==FP_CLASS_QNAN)
+# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
+# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
+# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_CLASS_NINF||Perl_fp_class(x)==FP_CLASS_PINF)
+# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
+# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
+# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_CLASS_NNORM||Perl_fp_class(x)==FP_CLASS_PNORM)
+# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
+# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
+# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM||Perl_fp_class(x)==FP_CLASS_PDENORM)
+# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
+# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
+# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_CLASS_NZERO||Perl_fp_class(x)==FP_CLASS_PZERO)
+#endif
+
+#if !defined(Perl_fp_class) && defined(HAS_FP_CLASS)
+# include <math.h>
+# if !defined(FP_SNAN) && defined(I_FP_CLASS)
+# include <fp_class.h>
+# endif
+# define Perl_fp_class(x) fp_class(x)
+# define Perl_fp_class_snan(x) (fp_class(x)==FP_SNAN)
+# define Perl_fp_class_qnan(x) (fp_class(x)==FP_QNAN)
+# define Perl_fp_class_nan(x) (fp_class(x)==FP_SNAN||fp_class(x)==FP_QNAN)
+# define Perl_fp_class_ninf(x) (fp_class(x)==FP_NEG_INF)
+# define Perl_fp_class_pinf(x) (fp_class(x)==FP_POS_INF)
+# define Perl_fp_class_inf(x) (fp_class(x)==FP_NEG_INF||fp_class(x)==FP_POS_INF)
+# define Perl_fp_class_nnorm(x) (fp_class(x)==FP_NEG_NORM)
+# define Perl_fp_class_pnorm(x) (fp_class(x)==FP_POS_NORM)
+# define Perl_fp_class_norm(x) (fp_class(x)==FP_NEG_NORM||fp_class(x)==FP_POS_NORM)
+# define Perl_fp_class_ndenorm(x) (fp_class(x)==FP_NEG_DENORM)
+# define Perl_fp_class_pdenorm(x) (fp_class(x)==FP_POS_DENORM)
+# define Perl_fp_class_denorm(x) (fp_class(x)==FP_NEG_DENORM||fp_class(x)==FP_POS_DENORM)
+# define Perl_fp_class_nzero(x) (fp_class(x)==FP_NEG_ZERO)
+# define Perl_fp_class_pzero(x) (fp_class(x)==FP_POS_ZERO)
+# define Perl_fp_class_zero(x) (fp_class(x)==FP_NEG_ZERO||fp_class(x)==FP_POS_ZERO)
+#endif
+
+#if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
+# include <math.h>
+# define Perl_fp_class(x) fpclassify(x)
+# define Perl_fp_class_nan(x) (fp_classify(x)==FP_SNAN|FP|_fp_classify(x)==QNAN)
+# define Perl_fp_class_inf(x) (fp_classify(x)==FP_INFINITE)
+# define Perl_fp_class_norm(x) (fp_classify(x)==FP_NORMAL)
+# define Perl_fp_class_denorm(x) (fp_classify(x)==FP_SUBNORMAL)
+# define Perl_fp_class_zero(x) (fp_classify(x)==FP_ZERO)
+#endif
+
+#if !defined(Perl_fp_class) && defined(HAS_CLASS)
+# include <math.h>
+# ifndef _cplusplus
+# define Perl_fp_class(x) class(x)
+# else
+# define Perl_fp_class(x) _class(x)
+# endif
+# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
+# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
+# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_SNAN||Perl_fp_class(x)==FP_QNAN)
+# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
+# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
+# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_MINUS_INF||Perl_fp_class(x)==FP_PLUS_INF)
+# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
+# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
+# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_MINUS_NORM||Perl_fp_class(x)==FP_PLUS_NORM)
+# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
+# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
+# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM||Perl_fp_class(x)==FP_PLUS_DENORM)
+# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
+# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
+# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_MINUS_ZERO||Perl_fp_class(x)==FP_PLUS_ZERO)
+#endif
+
+/* rumor has it that Win32 has _isnan() */
+
+#ifndef Perl_isnan
# ifdef HAS_ISNAN
-# define Perl_isnan(x) isnan(x)
+# define Perl_isnan(x) isnan((NV)x)
# else
-# define Perl_isnan(x) ((x)!=(x))
+# ifdef Perl_fp_class_nan
+# define Perl_isnan(x) Perl_fp_class_nan(x)
+# else
+# ifdef HAS_UNORDERED
+# define Perl_isnan(x) unordered((x), 0.0)
+# else
+# define Perl_isnan(x) ((x)!=(x))
+# endif
+# endif
+# endif
+#endif
+
+#ifndef Perl_isinf
+# ifdef HAS_ISINF
+# define Perl_isinf(x) isinf((NV)x)
+# else
+# ifdef Perl_fp_class_inf
+# define Perl_isinf(x) Perl_fp_class_inf(x)
+# else
+# define Perl_isinf(x) ((x)==NV_INF)
+# endif
+# endif
+#endif
+
+#ifndef Perl_isfinite
+# ifdef HAS_FINITE
+# define Perl_isfinite(x) finite((NV)x)
+# else
+# ifdef HAS_ISFINITE
+# define Perl_isfinite(x) isfinite(x)
+# else
+# ifdef Perl_fp_class_finite
+# define Perl_isfinite(x) Perl_fp_class_finite(x)
+# else
+# define Perl_isfinite(x) !(Perl_is_inf(x)||Perl_is_nan(x))
+# endif
+# endif
# endif
#endif
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