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

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

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/libc/src/musl-math/lgammaf.c b/lib/libc/src/musl-math/lgammaf.c
new file mode 100644
index 0000000..badb6df
--- /dev/null
+++ b/lib/libc/src/musl-math/lgammaf.c
@@ -0,0 +1,9 @@
+#include <math.h>
+
+extern int __signgam;
+float __lgammaf_r(float, int *);
+
+float lgammaf(float x)
+{
+	return __lgammaf_r(x, &__signgam);
+}