add significand[fl] math functions

[musl] / src / math / significandl.c

diff --git a/src/math/significandl.c b/src/math/significandl.c
new file mode 100644 (file)
index 0000000..c1d68cd
--- /dev/null
+++ b/src/math/significandl.c
@@ -0,0 +1,7 @@
+#define _GNU_SOURCE
+#include <math.h>
+
+long double significandl(long double x)
+{
+       return scalbnl(x, -ilogbl(x));
+}