X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmath%2F__fpclassifyl.c;h=6dc10025d29238df0935d7ad685ca9810912ef66;hb=a7dbcf5c8ca7edb7a46eb276031ad1df4131135b;hp=4f4f37a7eac6ee8a463c1245a9b5bfefe69282ee;hpb=f6fd351c703a2843959b3be83078d9dce33f30f3;p=musl

diff --git a/src/math/__fpclassifyl.c b/src/math/__fpclassifyl.c
index 4f4f37a7..6dc10025 100644
--- a/src/math/__fpclassifyl.c
+++ b/src/math/__fpclassifyl.c
@@ -1,16 +1,32 @@
-#include <stdint.h>
-#include <math.h>
+#include "libm.h"
 
-/* FIXME: move this to arch-specific file */
-int __fpclassifyl(long double __x)
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+
+#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
+int __fpclassifyl(long double x)
+{
+	union ldshape u = {x};
+	int e = u.i.se & 0x7fff;
+	int msb = u.i.m>>63;
+	if (!e && !msb)
+		return u.i.m ? FP_SUBNORMAL : FP_ZERO;
+	if (!msb)
+		return FP_NAN;
+	if (e == 0x7fff)
+		return u.i.m << 1 ? FP_NAN : FP_INFINITE;
+	return FP_NORMAL;
+}
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
+int __fpclassifyl(long double x)
 {
-	union {
-		long double __ld;
-		__uint16_t __hw[5];
-		__int64_t __m;
-	} __y = { __x };
-	int __ee = __y.__hw[4]&0x7fff;
-	if (!__ee) return __y.__m ? FP_SUBNORMAL : FP_ZERO;
-	if (__ee==0x7fff) return __y.__m ? FP_NAN : FP_INFINITE;
-	return __y.__m < 0 ? FP_NORMAL : FP_NAN;
+	union ldshape u = {x};
+	int e = u.i.se & 0x7fff;
+	if (!e)
+		return u.i2.lo | u.i2.hi ? FP_SUBNORMAL : FP_ZERO;
+	if (e == 0x7fff) {
+		u.i.se = 0;
+		return u.i2.lo | u.i2.hi ? FP_NAN : FP_INFINITE;
+	}
+	return FP_NORMAL;
 }
+#endif