feat: add gzip and new headers

1 files changed, 34 insertions, 0 deletions

diff --git a/lib/libm/sinhf.c b/lib/libm/sinhf.c
new file mode 100644
index 00000000..e5bd1a2a
--- /dev/null
+++ b/lib/libm/sinhf.c
@@ -0,0 +1,34 @@
+#include "libm.h"
+
+float sinhf(float x)
+{
+	union {
+		float f;
+		uint32_t i;
+	} u = { .f = x };
+	uint32_t w;
+	float t, h, absx;
+
+	h = 0.5;
+	if (u.i >> 31)
+		h = -h;
+	/* |x| */
+	u.i &= 0x7fffffff;
+	absx = u.f;
+	w = u.i;
+
+	/* |x| < log(FLT_MAX) */
+	if (w < 0x42b17217) {
+		t = expm1f(absx);
+		if (w < 0x3f800000) {
+			if (w < 0x3f800000 - (12 << 23))
+				return x;
+			return h * (2 * t - t * t / (t + 1));
+		}
+		return h * (t + t / (t + 1));
+	}
+
+	/* |x| > logf(FLT_MAX) or nan */
+	t = __expo2f(absx, 2 * h);
+	return t;
+}