libm/complex: add clog10, clog10f

	newlib/
	* libc/include/complex.h (clog10, clog10f): Declare.
	* libm/complex/Makefile.am (src): Add clog10.c.
	(fsrc): Add clog10f.c.
	(CHEWOUT_FILES): Add clog10.def.
	* libm/complex/Makefile.in: Regenerate.
	* libm/complex/clog10.c: New file.
	* libm/complex/clog10f.c: New file.
	* libm/complex/complex.tex: Add references to clog10 docs.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/newlib/libm/complex/clog10f.c b/newlib/libm/complex/clog10f.c
new file mode 100644
index 000000000..124273227
--- /dev/null
+++ b/newlib/libm/complex/clog10f.c
@@ -0,0 +1,15 @@
+#include <complex.h>
+#include <math.h>
+
+float complex
+clog10f(float complex z)
+{
+	float complex w;
+	float p, rr;
+
+	rr = cabsf(z);
+	p = log10f(rr);
+	rr = atan2f(cimagf(z), crealf(z)) * (float) M_IVLN10;
+	w = p + rr * I;
+	return w;
+}