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authorRich Felker <dalias@aerifal.cx>2011-06-08 16:33:04 -0400
committerRich Felker <dalias@aerifal.cx>2011-06-08 16:33:04 -0400
commite0037efc1253e190c7c75f74e5a05333fdd807bb (patch)
tree1c5f1a4a5ae9c963be046a3c147423d1b5c3c21c /include
parente1d2a8e2394640e4b573117b7653fd0f163671fe (diff)
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isgreater etc. relation macros for math.h
Diffstat (limited to 'include')
-rw-r--r--include/math.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/math.h b/include/math.h
index fffdf4f7..67724828 100644
--- a/include/math.h
+++ b/include/math.h
@@ -44,6 +44,24 @@ int __fpclassifyl(long double);
#define isnormal(x) (fpclassify(x) == FP_NORMAL)
#define isfinite(x) (fpclassify(x) > FP_INFINITE)
+#define isunordered(x,y) (isnan((x)) ? ((y),1) : isnan((y)))
+
+static inline int __isrel(long double __x, long double __y, int __rel)
+{
+ if (isunordered(__x, __y)) return 0;
+ if (__rel==-2) return __x < __y;
+ if (__rel==2) return __x > __y;
+ if (__rel==-1) return __x <= __y;
+ if (__rel==1) return __x >= __y;
+ return __x != __y;
+}
+
+#define isless(x,y) __isrel((x), (y), -2)
+#define islessequal(x,y) __isrel((x), (y), -1)
+#define islessgreater(x,y) __isrel((x), (y), 0)
+#define isgreaterequal(x,y) __isrel((x), (y), 1)
+#define isgreater(x,y) __isrel((x), (y), 2)
+
double acos(double);
float acosf(float);
long double acosl(long double);