Imported Upstream version 93u+upstream

1 files changed, 92 insertions, 0 deletions

diff --git a/src/lib/libast/string/fmtnum.c b/src/lib/libast/string/fmtnum.c
new file mode 100644
index 0000000..49fb9c3
--- /dev/null
+++ b/src/lib/libast/string/fmtnum.c
@@ -0,0 +1,92 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+/*
+ * Glenn Fowler
+ * AT&T Research
+ *
+ * return scaled number n
+ * string width is 5 chars or less
+ * if m>1 then n divided by m before scaling
+ */
+
+#include <ast.h>
+
+char*
+fmtnum(register unsigned long n, int m)
+{
+	register int		i;
+	register unsigned long	r;
+	char*			buf;
+	int			z;
+
+	char			suf[2];
+
+	if (m > 1)
+	{
+		r = n;
+		n /= m;
+		r -= n;
+	}
+	else
+		r = 0;
+	suf[1] = 0;
+	if (n < 1024)
+		suf[0] = 0;
+	else if (n < 1024 * 1024)
+	{
+		suf[0] = 'k';
+		r = ((n % 1024) * 100) / 1024;
+		n /= 1024;
+	}
+	else if (n < 1024 * 1024 * 1024)
+	{
+		suf[0] = 'm';
+		r = ((n % (1024 * 1024)) * 100) / (1024 * 1024);
+		n /= 1024 * 1024;
+	}
+	else
+	{
+		suf[0] = 'g';
+		r = ((n % (1024 * 1024 * 1024)) * 100) / (1024 * 1024 * 1024);
+		n /= 1024 * 1024 * 1024;
+	}
+	if (r)
+	{
+		if (n >= 100)
+			r = 0;
+		else if (n >= 10)
+		{
+			i = 1;
+			if (r >= 10)
+				r /= 10;
+		}
+		else
+			i = 2;
+	}
+	buf = fmtbuf(z = 8);
+	if (r)
+		sfsprintf(buf, z, "%lu.%0*lu%s", n, i, r, suf);
+	else
+		sfsprintf(buf, z, "%lu%s", n, suf);
+	return buf;
+}