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-rw-r--r--math/math.h66
1 files changed, 33 insertions, 33 deletions
diff --git a/math/math.h b/math/math.h
index ae83262..5103f2e 100644
--- a/math/math.h
+++ b/math/math.h
@@ -1,5 +1,5 @@
/* Declarations for math functions.
- Copyright (C) 1991, 92, 93, 95, 96, 97 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -262,41 +262,41 @@ extern int matherr __P ((struct exception *__exc));
#endif /* SVID */
-#if defined __USE_BSD || defined __USE_UNIX98
-
/* Some useful constants. */
-# define M_E _Mldbl(2.7182818284590452354) /* e */
-# define M_LOG2E _Mldbl(1.4426950408889634074) /* log_2 e */
-# define M_LOG10E _Mldbl(0.43429448190325182765) /* log_10 e */
-# define M_LN2 _Mldbl(0.69314718055994530942) /* log_e 2 */
-# define M_LN10 _Mldbl(2.30258509299404568402) /* log_e 10 */
-# define M_PI _Mldbl(3.14159265358979323846) /* pi */
-# define M_PI_2 _Mldbl(1.57079632679489661923) /* pi/2 */
-# define M_PI_4 _Mldbl(0.78539816339744830962) /* pi/4 */
-# define M_1_PI _Mldbl(0.31830988618379067154) /* 1/pi */
-# define M_2_PI _Mldbl(0.63661977236758134308) /* 2/pi */
-# define M_2_SQRTPI _Mldbl(1.12837916709551257390) /* 2/sqrt(pi) */
-# define M_SQRT2 _Mldbl(1.41421356237309504880) /* sqrt(2) */
-# define M_SQRT1_2 _Mldbl(0.70710678118654752440) /* 1/sqrt(2) */
-
+#if defined __USE_BSD || defined __USE_UNIX98
+# define M_E 2.7182818284590452354 /* e */
+# define M_LOG2E 1.4426950408889634074 /* log_2 e */
+# define M_LOG10E 0.43429448190325182765 /* log_10 e */
+# define M_LN2 0.69314718055994530942 /* log_e 2 */
+# define M_LN10 2.30258509299404568402 /* log_e 10 */
+# define M_PI 3.14159265358979323846 /* pi */
+# define M_PI_2 1.57079632679489661923 /* pi/2 */
+# define M_PI_4 0.78539816339744830962 /* pi/4 */
+# define M_1_PI 0.31830988618379067154 /* 1/pi */
+# define M_2_PI 0.63661977236758134308 /* 2/pi */
+# define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
+# define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+# define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#endif
-/* Our constants might specify more precision than `double' can represent.
- Use `long double' constants in standard and GNU C, where they are
- supported and the cast to `double'.
-
- If the constants are use in code which does not use prototypes, one
- might get problems if a function takes a `double' argument and any
- of the constants are provided as the argument. In this case, cast
- the argument to `double'.
-
- Please note we define the macro even if the constants are not defined.
- This helps us to use the macros in other places. */
-#if (__STDC__ - 0 || __GNUC__ - 0) && defined __USE_GNU
-# define _Mldbl(x) x##L
-#else /* Traditional C. */
-# define _Mldbl(x) x
-#endif /* Standard or GNU C. */
+/* The above constants are not adequate for computation using `long double's.
+ Therefore we provide as an extension constants with similar names as a
+ GNU extension. */
+#ifdef __USE_GNU
+# define M_El 2.7182818284590452354L /* e */
+# define M_LOG2El 1.4426950408889634074L /* log_2 e */
+# define M_LOG10El 0.43429448190325182765L /* log_10 e */
+# define M_LN2l 0.69314718055994530942L /* log_e 2 */
+# define M_LN10l 2.30258509299404568402L /* log_e 10 */
+# define M_PIl 3.14159265358979323846L /* pi */
+# define M_PI_2l 1.57079632679489661923L /* pi/2 */
+# define M_PI_4l 0.78539816339744830962L /* pi/4 */
+# define M_1_PIl 0.31830988618379067154L /* 1/pi */
+# define M_2_PIl 0.63661977236758134308L /* 2/pi */
+# define M_2_SQRTPIl 1.12837916709551257390L /* 2/sqrt(pi) */
+# define M_SQRT2l 1.41421356237309504880L /* sqrt(2) */
+# define M_SQRT1_2l 0.70710678118654752440L /* 1/sqrt(2) */
+#endif
/* Get machine-dependent inline versions (if there are any). */