usr: libc: Add math.h + musl math impl portexpt

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/libc/src/musl-math/scalblnf.c b/lib/libc/src/musl-math/scalblnf.c
new file mode 100644
index 0000000..b6bdeed
--- /dev/null
+++ b/lib/libc/src/musl-math/scalblnf.c
@@ -0,0 +1,12 @@
+#include <limits.h>
+#include <math.h>
+#include "libm.h"
+
+float scalblnf(float x, long n)
+{
+	if (n > INT_MAX)
+		n = INT_MAX;
+	else if (n < INT_MIN)
+		n = INT_MIN;
+	return scalbnf(x, n);
+}