- add NAN definition (except on VAX)

- add C99 real-floating macros fpclassify isfinite isinf isnan
isnormal signbit
- add C99 macros isgreater isgreaterequal isless islessequal
islessgreater isunordered
- add function prototypes, __fpclassify __fpclassifyf __fpclassifyl
__isfinite __isfinitef __isfinitel __isinf __isinfl __isnan __isnanl
__isnormal __isnormalf __isnormall __signbit __signbitf __signbitl
ok millert@

diff --git a/include/math.h b/include/math.h
index 024b2c2..e1ccb67 100644 (file)
--- a/include/math.h
+++ b/include/math.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: math.h,v 1.18 2008/07/22 16:01:46 martynas Exp $      */
+/*     $OpenBSD: math.h,v 1.19 2008/07/24 09:35:30 martynas Exp $      */
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
@@ -37,9 +37,10 @@ typedef      __float_t       float_t;
 #define        HUGE_VALF       ((float)HUGE_VAL)
 #define        HUGE_VALL       ((long double)HUGE_VAL)
 #define        INFINITY        HUGE_VALF
-#if 0  /* XXX */
-#define        NAN             nan("")
-#endif /* XXX */
+#ifndef __vax__
+extern char __nan[];
+#define        NAN             (*(float *)(void *)__nan)
+#endif /* !__vax__ */
 
 #define        FP_INFINITE     0x01
 #define        FP_NAN          0x02
@@ -50,7 +51,6 @@ typedef       __float_t       float_t;
 #define FP_ILOGB0      (-INT_MAX)
 #define FP_ILOGBNAN    INT_MAX
 
-#if 0  /* XXX */
 #define fpclassify(x) \
        ((sizeof (x) == sizeof (float)) ? \
                __fpclassifyf(x) \
@@ -95,10 +95,6 @@ typedef      __float_t       float_t;
 #define        islessgreater(x, y)     (!isunordered((x), (y)) && \
                                        ((x) > (y) || (y) > (x)))
 #define        isunordered(x, y)       (isnan(x) || isnan(y))
-#else  /* XXX */
-extern int isinf(double);
-extern int isnan(double);
-#endif /* XXX */
 #endif /* __ISO_C_VISIBLE >= 1999 */
 
 /*
@@ -516,7 +512,6 @@ extern long double fmal(long double, long double, long double);
 /*
  * Library implementation
  */
-#if 0  /* XXX */
 extern int __fpclassify(double);
 extern int __fpclassifyf(float);
 extern int __fpclassifyl(long double);
@@ -533,7 +528,6 @@ extern int __isnormall(long double);
 extern int __signbit(double);
 extern int __signbitf(float);
 extern int __signbitl(long double);
-#endif /* XXX */
 
 #if __BSD_VISIBLE && defined(__vax__)
 extern double infnan(int);