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m---------gnulib0
-rw-r--r--gnulib/lib/dtotimespec.c69
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diff --git a/gnulib b/gnulib
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diff --git a/gnulib/lib/dtotimespec.c b/gnulib/lib/dtotimespec.c
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+/* Convert double to timespec.
+
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* written by Paul Eggert */
+
+/* Convert the double value SEC to a struct timespec. Round toward
+ positive infinity. On overflow, return an extremal value. */
+
+#include <config.h>
+
+#include "timespec.h"
+
+#include "intprops.h"
+
+struct timespec
+dtotimespec (double sec)
+{
+ enum { BILLION = 1000 * 1000 * 1000 };
+ double min_representable = TYPE_MINIMUM (time_t);
+ double max_representable =
+ ((TYPE_MAXIMUM (time_t) * (double) BILLION + (BILLION - 1))
+ / BILLION);
+ struct timespec r;
+
+ if (! (min_representable < sec))
+ {
+ r.tv_sec = TYPE_MINIMUM (time_t);
+ r.tv_nsec = 0;
+ }
+ else if (! (sec < max_representable))
+ {
+ r.tv_sec = TYPE_MAXIMUM (time_t);
+ r.tv_nsec = BILLION - 1;
+ }
+ else
+ {
+ time_t s = sec;
+ double frac = BILLION * (sec - s);
+ long ns = frac;
+ ns += ns < frac;
+ s += ns / BILLION;
+ ns %= BILLION;
+
+ if (ns < 0)
+ {
+ s--;
+ ns += BILLION;
+ }
+
+ r.tv_sec = s;
+ r.tv_nsec = ns;
+ }
+
+ return r;
+}