feat: add gzip and new headers

1 files changed, 27 insertions, 0 deletions

diff --git a/lib/libm/exp10f.c b/lib/libm/exp10f.c
new file mode 100644
index 00000000..64883569
--- /dev/null
+++ b/lib/libm/exp10f.c
@@ -0,0 +1,27 @@
+#define _GNU_SOURCE
+#include "libm.h"
+
+#include <math.h>
+#include <stdint.h>
+
+float exp10f(float x)
+{
+	static const float p10[] = { 1e-7f, 1e-6f, 1e-5f, 1e-4f, 1e-3f,
+				     1e-2f, 1e-1f, 1,	  1e1,	 1e2,
+				     1e3,   1e4,   1e5,	  1e6,	 1e7 };
+	float n, y = modff(x, &n);
+	union {
+		float f;
+		uint32_t i;
+	} u = { n };
+	/* fabsf(n) < 8 without raising invalid on nan */
+	if ((u.i >> 23 & 0xff) < 0x7f + 3) {
+		if (!y)
+			return p10[(int)n + 7];
+		y = exp2f(3.32192809488736234787031942948939f * y);
+		return y * p10[(int)n + 7];
+	}
+	return exp2(3.32192809488736234787031942948939 * x);
+}
+
+weak_alias(exp10f, pow10f);