X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Fexp10l.c;h=f3da1a082c5ef35183304ed12f7c74d7d168db1d;hb=29e4319178cbc2a4e9f058a99ae8098d4b6ac055;hp=4b2b7ef61a4cf5f47d84ea3d4a3c206eef0d14ff;hpb=a917c03706d94564082d5ccff032a3e2c3dad537;p=musl

diff --git a/src/math/exp10l.c b/src/math/exp10l.c
index 4b2b7ef6..f3da1a08 100644
--- a/src/math/exp10l.c
+++ b/src/math/exp10l.c
@@ -1,22 +1,32 @@
 #define _GNU_SOURCE
+#include <float.h>
 #include <math.h>
-#include "libc.h"
+#include "libm.h"
 
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+long double exp10l(long double x)
+{
+	return exp10(x);
+}
+#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
 long double exp10l(long double x)
 {
 	static const long double p10[] = {
-		1e-15, 1e-14, 1e-13, 1e-12, 1e-11, 1e-10,
-		1e-9, 1e-8, 1e-7, 1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1,
+		1e-15L, 1e-14L, 1e-13L, 1e-12L, 1e-11L, 1e-10L,
+		1e-9L, 1e-8L, 1e-7L, 1e-6L, 1e-5L, 1e-4L, 1e-3L, 1e-2L, 1e-1L,
 		1, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
 		1e10, 1e11, 1e12, 1e13, 1e14, 1e15
 	};
 	long double n, y = modfl(x, &n);
-	if (fabsl(n) < 16) {
+	union ldshape u = {n};
+	/* fabsl(n) < 16 without raising invalid on nan */
+	if ((u.i.se & 0x7fff) < 0x3fff+4) {
 		if (!y) return p10[(int)n+15];
 		y = exp2l(3.32192809488736234787031942948939L * y);
 		return y * p10[(int)n+15];
 	}
 	return powl(10.0, x);
 }
+#endif
 
 weak_alias(exp10l, pow10l);