From 792e51b721491b19904e046124fb8c4c0e83f621 Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Mon, 28 Mar 2016 19:35:20 +0200
Subject: Add missing long double functions to Cygwin

This patch adds the long double functions missing in newlib to Cygwin.
Apart from some self-written additions (exp10l, finite{f,l}, isinf{f,l},
isnan{f,l}, pow10l) the files are taken from the Mingw-w64 math lib.
Minor changes were required, e.g. substitue _WIN64 with __x86_64__ and
fixing __FLT_RPT_DOMAIN/__FLT_RPT_ERANGE for Cygwin.

Cygwin:
	* math: New subdir with math functions.
	* Makefile.in (VPATH): Add math subdir.
	(MATH_OFILES): List of object files collected from building files in
	math subdir.
	(DLL_OFILES): Add $(MATH_OFILES).
	${CURDIR}/libm.a: Add $(MATH_OFILES) to build.
	* common.din: Add new functions from math subdir.
	* i686.din: Align to new math subdir.  Remove functions now commonly
	available.
	* x86_64.din: Ditto.
	* math.h: math.h wrapper to define mingw structs used in some files in
	math subdir.
	* include/cygwin/version.h: Bump API minor version.

newlib:
	* libc/include/complex.h: Add prototypes for complex long double
	functions.  Only define for Cygwin.
	* libc/include/math.h: Additionally enable prototypes of long double
	functions for Cygwin.  Add Cygwin-only prototypes for dreml, sincosl,
	exp10l and pow10l.  Explain why we don't add them to newlib.
	* libc/include/tgmath.h: Enable long double handling on Cygwin.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
---
 winsup/cygwin/math/cosl_internal.S | 55 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 winsup/cygwin/math/cosl_internal.S

(limited to 'winsup/cygwin/math/cosl_internal.S')

diff --git a/winsup/cygwin/math/cosl_internal.S b/winsup/cygwin/math/cosl_internal.S
new file mode 100644
index 000000000..3c8f60d14
--- /dev/null
+++ b/winsup/cygwin/math/cosl_internal.S
@@ -0,0 +1,55 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <_mingw_mac.h>
+
+	.file	"cosl_internal.S"
+	.text
+#ifdef __x86_64__
+	.align 8
+#else
+	.align 4
+#endif
+.globl __MINGW_USYMBOL(__cosl_internal)
+	.def	__MINGW_USYMBOL(__cosl_internal);	.scl	2;	.type	32;	.endef
+__MINGW_USYMBOL(__cosl_internal):
+#ifdef __x86_64__
+	fldt	(%rdx)
+	fcos
+	fnstsw	%ax
+	testl	$0x400,%eax
+	jz	1f
+	fldpi
+	fadd	%st(0)
+	fxch	%st(1)
+2:	fprem1
+	fnstsw	%ax
+	testl	$0x400,%eax
+	jnz	2b
+	fstp	%st(1)
+	fcos
+1:	movq %rcx,%rax
+	movq	$0,8(%rcx)
+	fstpt (%rcx)
+	ret
+#else
+	fldt	4(%esp)
+	fcos
+	fnstsw	%ax
+	testl	$0x400,%eax
+	jnz	1f
+	ret
+1:	fldpi
+	fadd	%st(0)
+	fxch	%st(1)
+2:	fprem1
+	fnstsw	%ax
+	testl	$0x400,%eax
+	jnz	2b
+	fstp	%st(1)
+	fcos
+	ret
+#endif
+
-- 
cgit v1.2.3