add circuitpython code

1 files changed, 8 insertions, 0 deletions

diff --git a/circuitpython/lib/libm_dbl/lgamma.c b/circuitpython/lib/libm_dbl/lgamma.c
new file mode 100644
index 0000000..ed193da
--- /dev/null
+++ b/circuitpython/lib/libm_dbl/lgamma.c
@@ -0,0 +1,8 @@
+#include <math.h>
+
+double __lgamma_r(double, int*);
+
+double lgamma(double x) {
+    int sign;
+    return __lgamma_r(x, &sign);
+}