X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fmath%2Fexp10l.c;fp=src%2Fmath%2Fexp10l.c;h=4d0c5a01195a1e2f7ff9b77b163f1c1f7feaa3b0;hp=0000000000000000000000000000000000000000;hb=f6819755779a084bf2f82cb90175a4d9a018de73;hpb=63374ee233c44891db80e6600d7a5a8c82e4ccca

diff --git a/src/math/exp10l.c b/src/math/exp10l.c
new file mode 100644
index 00000000..4d0c5a01
--- /dev/null
+++ b/src/math/exp10l.c
@@ -0,0 +1,19 @@
+#define _GNU_SOURCE
+#include <math.h>
+
+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,
+		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) {
+		if (!y) return p10[(int)n+15];
+		y = exp2l(3.32192809488736234787031942948939L * y);
+		return y * p10[(int)n+15];
+	}
+	return powl(10.0, x);
+}