sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 37 insertions, 0 deletions

diff --git a/device/lib/isinf.c b/device/lib/isinf.c
new file mode 100755
index 0000000..5433bd2
--- /dev/null
+++ b/device/lib/isinf.c
@@ -0,0 +1,37 @@
+/*-------------------------------------------------------------------------

+   isinf.c - Check if a float value is an infinite (positive or negative)

+

+   Copyright (C) 2016, Ben Shi, powerstudio1st@163.com

+

+   This library is free software; you can redistribute it and/or modify it

+   under the terms of the GNU General Public License as published by the

+   Free Software Foundation; either version 2, or (at your option) any

+   later version.

+

+   This library is distributed in the hope that it will be useful,

+   but WITHOUT ANY WARRANTY; without even the implied warranty of

+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+   GNU General Public License for more details.

+

+   You should have received a copy of the GNU General Public License

+   along with this library; see the file COPYING. If not, write to the

+   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,

+   MA 02110-1301, USA.

+

+   As a special exception, if you link this library with other files,

+   some of which are compiled with SDCC, to produce an executable,

+   this library does not by itself cause the resulting executable to

+   be covered by the GNU General Public License. This exception does

+   not however invalidate any other reasons why the executable file

+   might be covered by the GNU General Public License.

+-------------------------------------------------------------------------*/

+

+#define __SDCC_FLOAT_LIB

+#include <float.h>

+#include <math.h>

+

+int isinf (float f)

+{

+  unsigned long *pl = (unsigned long *) &f;

+  return *pl == 0x7f800000 || *pl == 0xff800000;

+}