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authorRich Felker <dalias@aerifal.cx>2011-02-14 18:41:25 -0500
committerRich Felker <dalias@aerifal.cx>2011-02-14 18:41:25 -0500
commit74eea628cf43355ba2b227f0bb3c31697d637761 (patch)
tree9fe300db7b7fa7f541bdfa41176d0f6333851e74 /include/math.h
parent80695b1d1e64a026c473a33965e680444e863e34 (diff)
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extensive header cleanup for standards conformance & correctness
thanks to Peter Mazinger (psm) for pointing many of these issues out and submitting a patch on which this commit is loosely based
Diffstat (limited to 'include/math.h')
-rw-r--r--include/math.h36
1 files changed, 19 insertions, 17 deletions
diff --git a/include/math.h b/include/math.h
index cc9befb7..fffdf4f7 100644
--- a/include/math.h
+++ b/include/math.h
@@ -6,20 +6,6 @@
#define __NEED___uint64_t
#include <bits/alltypes.h>
-#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) */
-
#define __MAKE_FLOAT(i) (((union { int __i; float __f; }){ .__i = i }).__f)
#define NAN __MAKE_FLOAT(0x7fc00000)
@@ -286,15 +272,31 @@ double trunc(double);
float truncf(float);
long double truncl(long double);
-/* XSI stuff */
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#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) */
double j0(double);
double j1(double);
double jn(int, double);
-double scalb(double, double);
double y0(double);
double y1(double);
double yn(int, double);
-
extern int signgam;
+#endif
+
+#ifdef _GNU_SOURCE
+double scalb(double, double);
+#endif
#endif