summaryrefslogtreecommitdiff
path: root/lib/libutils/isoc/newlib/abs.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libutils/isoc/newlib/abs.c')
-rw-r--r--lib/libutils/isoc/newlib/abs.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libutils/isoc/newlib/abs.c b/lib/libutils/isoc/newlib/abs.c
new file mode 100644
index 0000000..b073485
--- /dev/null
+++ b/lib/libutils/isoc/newlib/abs.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 1994-2009 Red Hat, Inc.
+ * 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.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+FUNCTION
+<<abs>>---integer absolute value (magnitude)
+
+INDEX
+ abs
+
+ANSI_SYNOPSIS
+ #include <stdlib.h>
+ int abs(int <[i]>);
+
+TRAD_SYNOPSIS
+ #include <stdlib.h>
+ int abs(<[i]>)
+ int <[i]>;
+
+DESCRIPTION
+<<abs>> returns
+@tex
+$|x|$,
+@end tex
+the absolute value of <[i]> (also called the magnitude
+of <[i]>). That is, if <[i]> is negative, the result is the opposite
+of <[i]>, but if <[i]> is nonnegative the result is <[i]>.
+
+The similar function <<labs>> uses and returns <<long>> rather than <<int>> values.
+
+RETURNS
+The result is a nonnegative integer.
+
+PORTABILITY
+<<abs>> is ANSI.
+
+No supporting OS subroutines are required.
+*/
+
+#include "_ansi.h"
+#include <stdlib.h>
+
+int
+_DEFUN (abs, (i), int i)
+{
+ return (i < 0) ? -i : i;
+}