Importing cacoshl.c and its dependencies

[aditya upadhyay <aadit0402 at gmail dot com>]

Hello Developers,

I have ported cacoshl.c from netbsd. I am not sure about stdbool.h,
since it is already there in gcc libraries, so i have not included in
csqrtl.c file.

I am requesting you to please review the same and suggest me required
modification.

Thanks & Regards,
Aditya Upadhyay

From bac8af9c33af6b39822c9d211b68313f5b6b2b48 Mon Sep 17 00:00:00 2001
From: Aditya Upadhyay <aadit0402@gmail.com>
Date: Tue, 20 Jun 2017 16:35:12 +0530
Subject: [PATCH] Importing cacoshl.c and its dependencies.

---
 newlib/libm/complex/Makefile.am |   2 +-
 newlib/libm/complex/Makefile.in |  26 ++++++++--
 newlib/libm/complex/cacoshl.c   |  45 ++++++++++++++++
 newlib/libm/complex/clogl.c     |  46 +++++++++++++++++
 newlib/libm/complex/csqrtl.c    | 112 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 227 insertions(+), 4 deletions(-)
 create mode 100644 newlib/libm/complex/cacoshl.c
 create mode 100644 newlib/libm/complex/clogl.c
 create mode 100644 newlib/libm/complex/csqrtl.c

diff --git a/newlib/libm/complex/Makefile.am b/newlib/libm/complex/Makefile.am
index 402053f..9d04a5c 100644
--- a/newlib/libm/complex/Makefile.am
+++ b/newlib/libm/complex/Makefile.am
@@ -10,7 +10,7 @@ src = cabs.c cacos.c cacosh.c carg.c casin.c casinh.c \
       cpow.c cproj.c  creal.c  \
       csin.c csinh.c csqrt.c ctan.c ctanh.c
 
-lsrc = cabsl.c creall.c cimagl.c ccoshl.c
+lsrc = cabsl.c creall.c cimagl.c ccoshl.c cacoshl.c csqrtl.c clogl.c
 
 fsrc =	cabsf.c casinf.c ccosf.c cimagf.c cprojf.c  \
         csqrtf.c cacosf.c casinhf.c ccoshf.c clogf.c clog10f.c \
diff --git a/newlib/libm/complex/Makefile.in b/newlib/libm/complex/Makefile.in
index 55c74a1..581419f 100644
--- a/newlib/libm/complex/Makefile.in
+++ b/newlib/libm/complex/Makefile.in
@@ -97,7 +97,8 @@ am__objects_2 = lib_a-cabsf.$(OBJEXT) lib_a-casinf.$(OBJEXT) \
 	lib_a-catanhf.$(OBJEXT) lib_a-cexpf.$(OBJEXT) \
 	lib_a-cpowf.$(OBJEXT) lib_a-csinhf.$(OBJEXT)
 am__objects_3 = lib_a-cabsl.$(OBJEXT) lib_a-creall.$(OBJEXT) \
-	lib_a-cimagl.$(OBJEXT) lib_a-ccoshl.$(OBJEXT)
+	lib_a-cimagl.$(OBJEXT) lib_a-ccoshl.$(OBJEXT) lib_a-cacoshl.$(OBJEXT) \
+        lib_a-clogl.$(OBJEXT) lib_a-csqrtl.$(OBJEXT)
 @USE_LIBTOOL_FALSE@am_lib_a_OBJECTS = $(am__objects_1) \
 @USE_LIBTOOL_FALSE@	$(am__objects_2) $(am__objects_3)
 lib_a_OBJECTS = $(am_lib_a_OBJECTS)
@@ -112,7 +113,8 @@ am__objects_5 = cabsf.lo casinf.lo ccosf.lo cimagf.lo cprojf.lo \
 	crealf.lo ctanf.lo cacoshf.lo catanf.lo cephes_subrf.lo \
 	conjf.lo csinf.lo ctanhf.lo cargf.lo catanhf.lo cexpf.lo \
 	cpowf.lo csinhf.lo
-am__objects_6 = cabsl.lo creall.lo cimagl.lo ccoshl.lo
+am__objects_6 = cabsl.lo creall.lo cimagl.lo ccoshl.lo cacoshl.lo \
+        clogl.lo csqrtl.lo
 @USE_LIBTOOL_TRUE@am_libcomplex_la_OBJECTS = $(am__objects_4) \
 @USE_LIBTOOL_TRUE@	$(am__objects_5) $(am__objects_6)
 libcomplex_la_OBJECTS = $(am_libcomplex_la_OBJECTS)
@@ -276,7 +278,7 @@ src = cabs.c cacos.c cacosh.c carg.c casin.c casinh.c \
       cpow.c cproj.c  creal.c  \
       csin.c csinh.c csqrt.c ctan.c ctanh.c
 
-lsrc = cabsl.c creall.c cimagl.c ccoshl.c
+lsrc = cabsl.c creall.c cimagl.c ccoshl.c cacoshl.c clogl.c csqrtl.c
 fsrc = cabsf.c casinf.c ccosf.c cimagf.c cprojf.c  \
         csqrtf.c cacosf.c casinhf.c ccoshf.c clogf.c clog10f.c \
         crealf.c ctanf.c cacoshf.c catanf.c   \
@@ -689,6 +691,24 @@ lib_a-ccoshl.o: ccoshl.c
 lib_a-ccoshl.obj: ccoshl.c
 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-ccoshl.obj `if test -f 'ccoshl.c'; then $(CYGPATH_W) 'ccoshl.c'; else $(CYGPATH_W) '$(srcdir)/ccoshl.c'; fi`
 
+lib_a-cacoshl.o: cacoshl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-cacoshl.o `test -f 'cacoshl.c' || echo '$(srcdir)/'`cacoshl.c
+
+lib_a-cacoshl.obj: cacoshl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-cacoshl.obj `if test -f 'cacoshl.c'; then $(CYGPATH_W) 'cacoshl.c'; else $(CYGPATH_W) '$(srcdir)/cacoshl.c'; fi`
+
+lib_a-clogl.o: clogl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-clogl.o `test -f 'clogl.c' || echo '$(srcdir)/'`clogl.c
+
+lib_a-clogl.obj: clogl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-clogl.obj `if test -f 'clogl.c'; then $(CYGPATH_W) 'clogl.c'; else $(CYGPATH_W) '$(srcdir)/clogl.c'; fi`
+
+lib_a-csqrtl.o: csqrtl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-csqrtl.o `test -f 'csqrtl.c' || echo '$(srcdir)/'`csqrtl.c
+
+lib_a-csqrtl.obj: csqrtl.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-csqrtl.obj `if test -f 'csqrtl.c'; then $(CYGPATH_W) 'csqrtl.c'; else $(CYGPATH_W) '$(srcdir)/csqrtl.c'; fi`
+
 mostlyclean-libtool:
 	-rm -f *.lo
 
diff --git a/newlib/libm/complex/cacoshl.c b/newlib/libm/complex/cacoshl.c
new file mode 100644
index 0000000..4e4e006
--- /dev/null
+++ b/newlib/libm/complex/cacoshl.c
@@ -0,0 +1,45 @@
+/* $NetBSD: cacoshl.c,v 1.1 2014/10/10 00:48:18 christos Exp $ */
+
+/*-
+ * Copyright (c) 2007 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software written by Stephen L. Moshier.
+ * It is redistributed by the NetBSD Foundation by permission of the author.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <complex.h>
+
+long double complex
+cacoshl(long double complex z)
+{
+	long double complex w;
+
+#if 0 /* does not give the principal value */
+	w = I * cacosl(z);
+#else
+	w = clogl(z + csqrtl(z + 1) * csqrtl(z - 1));
+#endif
+	return w;
+}
diff --git a/newlib/libm/complex/clogl.c b/newlib/libm/complex/clogl.c
new file mode 100644
index 0000000..3644a44
--- /dev/null
+++ b/newlib/libm/complex/clogl.c
@@ -0,0 +1,46 @@
+/* $NetBSD: clogl.c,v 1.1 2014/10/10 00:48:18 christos Exp $ */
+
+/*-
+ * Copyright (c) 2007 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software written by Stephen L. Moshier.
+ * It is redistributed by the NetBSD Foundation by permission of the author.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <complex.h>
+#include <math.h>
+
+long double complex
+clogl(long double complex z)
+{
+	long double complex w;
+	long double p, rr;
+
+	rr = cabsl(z);
+	p = logl(rr);
+	rr = atan2l(cimagl(z), creall(z));
+	w = p + rr * I;
+	return w;
+}
diff --git a/newlib/libm/complex/csqrtl.c b/newlib/libm/complex/csqrtl.c
new file mode 100644
index 0000000..72d1d1d
--- /dev/null
+++ b/newlib/libm/complex/csqrtl.c
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 2007-2008 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#if 0
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrtl.c 181402 2008-08-08 00:15:16Z das $");
+#else
+__RCSID("$NetBSD: csqrtl.c,v 1.2 2014/10/11 00:43:51 christos Exp $");
+#endif
+
+#include <complex.h>
+#include <float.h>
+#include <math.h>
+
+/*
+ * gcc doesn't implement complex multiplication or division correctly,
+ * so we need to handle infinities specially. We turn on this pragma to
+ * notify conforming c99 compilers that the fast-but-incorrect code that
+ * gcc generates is acceptable, since the special cases have already been
+ * handled.
+ */
+// #pragma	STDC CX_LIMITED_RANGE	ON
+
+/* We risk spurious overflow for components >= LDBL_MAX / (1 + sqrt(2)). */
+#define	THRESH	(LDBL_MAX / 2.414213562373095048801688724209698L)
+
+#define cpackl(r, i) ((r) + (i) * I)
+
+long double complex
+csqrtl(long double complex z)
+{
+	long double complex result;
+	long double a, b;
+	long double t;
+	bool scale;
+
+	a = creall(z);
+	b = cimagl(z);
+
+	/* Handle special cases. */
+	if (z == 0.0L)
+		return (cpackl(0.0L, b));
+	if (isinf(b))
+		return (cpackl(INFINITY, b));
+	if (isnan(a)) {
+		t = (b - b) / (b - b);	/* raise invalid if b is not a NaN */
+		return (cpackl(a, t));	/* return NaN + NaN i */
+	}
+	if (isinf(a)) {
+		/*
+		 * csqrt(inf + NaN i)  = inf +  NaN i
+		 * csqrt(inf + y i)    = inf +  0 i
+		 * csqrt(-inf + NaN i) = NaN +- inf i
+		 * csqrt(-inf + y i)   = 0   +  inf i
+		 */
+		if (signbit(a))
+			return (cpackl(fabsl(b - b), copysignl(a, b)));
+		else
+			return (cpackl(a, copysignl(b - b, b)));
+	}
+	/*
+	 * The remaining special case (b is NaN) is handled just fine by
+	 * the normal code path below.
+	 */
+
+	/* Scale to avoid overflow. */
+	if (fabsl(a) >= THRESH || fabsl(b) >= THRESH) {
+		a *= 0.25L;
+		b *= 0.25L;
+		scale = true;
+	} else {
+		scale = false;
+	}
+
+	/* Algorithm 312, CACM vol 10, Oct 1967. */
+	if (a >= 0L) {
+		t = sqrtl((a + hypotl(a, b)) * 0.5L);
+		result = cpackl(t, b / (2.0L * t));
+	} else {
+		t = sqrtl((-a + hypotl(a, b)) * 0.5L);
+		result = cpackl(fabsl(b) / (2.0L * t), copysignl(t, b));
+	}
+
+	/* Rescale. */
+	if (scale)
+		return (result * 2.0L);
+	else
+		return (result);
+}
-- 
2.7.4