From e74f57e9942decc725f52795bb4d6883f58cc299 Mon Sep 17 00:00:00 2001
From: rmanfredi <rmanfredi@2592e710-e01b-42a5-8df0-11608a6cc53d>
Date: Wed, 29 Feb 2012 20:21:30 +0000
Subject: Added units to check for __builtin_ctz() and __builtin_clz() support.

git-svn-id: svn://svn.code.sf.net/p/dist/code/trunk/dist@137 2592e710-e01b-42a5-8df0-11608a6cc53d
---
 mcon/U/d_built_clz.U | 37 +++++++++++++++++++++++++++++++++++++
 mcon/U/d_built_ctz.U | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 mcon/U/d_built_clz.U
 create mode 100644 mcon/U/d_built_ctz.U

(limited to 'mcon/U')

diff --git a/mcon/U/d_built_clz.U b/mcon/U/d_built_clz.U
new file mode 100644
index 0000000..8af83ce
--- /dev/null
+++ b/mcon/U/d_built_clz.U
@@ -0,0 +1,37 @@
+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 2012 Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?MAKE:d_built_clz: Trylink cat
+?MAKE:	-pick add $@ %<
+?S:d_built_clz:
+?S:	This variable conditionally defines the HAS_BUILTIN_CLZ symbol, which
+?S:	indicates to the C program that __builtin_clz is available to count
+?S:	leading zeroes.
+?S:.
+?C:HAS_BUILTIN_CLZ:
+?C:	This symbol, if defined, indicates that the __builtin_clz routine is
+?C:	available to count leading zeroes in a word.
+?C:.
+?H:#$d_built_clz HAS_BUILTIN_CLZ	/**/
+?H:.
+?LINT:set d_built_clz
+: check for __builtin_clz
+$cat >try.c <<EOC
+int main(void)
+{
+	static int ret;
+	ret |= __builtin_clz(127);
+	return ret ? 0 : 1;
+}
+EOC
+cyn=__builtin_clz
+set d_built_clz
+eval $trylink
+
diff --git a/mcon/U/d_built_ctz.U b/mcon/U/d_built_ctz.U
new file mode 100644
index 0000000..279d50f
--- /dev/null
+++ b/mcon/U/d_built_ctz.U
@@ -0,0 +1,37 @@
+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 2012 Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?MAKE:d_built_ctz: Trylink cat
+?MAKE:	-pick add $@ %<
+?S:d_built_ctz:
+?S:	This variable conditionally defines the HAS_BUILTIN_CTZ symbol, which
+?S:	indicates to the C program that __builtin_ctz is available to count
+?S:	trailing zeroes.
+?S:.
+?C:HAS_BUILTIN_CTZ:
+?C:	This symbol, if defined, indicates that __builtin_ctz routine is
+?C:	available to count trailing zeroes in a word.
+?C:.
+?H:#$d_built_ctz HAS_BUILTIN_CTZ	/**/
+?H:.
+?LINT:set d_built_ctz
+: check for __builtin_ctz
+$cat >try.c <<EOC
+int main(void)
+{
+	static int ret;
+	ret |= __builtin_ctz(127);
+	return ret ? 0 : 1;
+}
+EOC
+cyn=__builtin_ctz
+set d_built_ctz
+eval $trylink
+
-- 
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