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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libgfortran/intrinsics/cpu_time.c
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libgfortran/intrinsics/cpu_time.c')
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1 files changed, 109 insertions, 0 deletions
diff --git a/gcc-4.9/libgfortran/intrinsics/cpu_time.c b/gcc-4.9/libgfortran/intrinsics/cpu_time.c
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+/* Implementation of the CPU_TIME intrinsic.
+ Copyright (C) 2003-2014 Free Software Foundation, Inc.
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran 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.
+
+Libgfortran 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#include "libgfortran.h"
+#include "time_1.h"
+
+
+static void
+__cpu_time_1 (long *sec, long *usec)
+{
+ long user_sec, user_usec, system_sec, system_usec;
+ if (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
+ {
+ *sec = user_sec + system_sec;
+ *usec = user_usec + system_usec;
+ }
+ else
+ {
+ *sec = -1;
+ *usec = 0;
+ }
+}
+
+
+extern void cpu_time_4 (GFC_REAL_4 *);
+iexport_proto(cpu_time_4);
+
+void cpu_time_4 (GFC_REAL_4 *time)
+{
+ long sec, usec;
+ __cpu_time_1 (&sec, &usec);
+ *time = sec + usec * GFC_REAL_4_LITERAL(1.e-6);
+}
+iexport(cpu_time_4);
+
+extern void cpu_time_8 (GFC_REAL_8 *);
+export_proto(cpu_time_8);
+
+void cpu_time_8 (GFC_REAL_8 *time)
+{
+ long sec, usec;
+ __cpu_time_1 (&sec, &usec);
+ *time = sec + usec * GFC_REAL_8_LITERAL(1.e-6);
+}
+
+#ifdef HAVE_GFC_REAL_10
+extern void cpu_time_10 (GFC_REAL_10 *);
+export_proto(cpu_time_10);
+
+void cpu_time_10 (GFC_REAL_10 *time)
+{
+ long sec, usec;
+ __cpu_time_1 (&sec, &usec);
+ *time = sec + usec * GFC_REAL_10_LITERAL(1.e-6);
+}
+#endif
+
+#ifdef HAVE_GFC_REAL_16
+extern void cpu_time_16 (GFC_REAL_16 *);
+export_proto(cpu_time_16);
+
+void cpu_time_16 (GFC_REAL_16 *time)
+{
+ long sec, usec;
+ __cpu_time_1 (&sec, &usec);
+ *time = sec + usec * GFC_REAL_16_LITERAL(1.e-6);
+}
+#endif
+
+extern void second_sub (GFC_REAL_4 *);
+export_proto(second_sub);
+
+void
+second_sub (GFC_REAL_4 *s)
+{
+ cpu_time_4 (s);
+}
+
+extern GFC_REAL_4 second (void);
+export_proto(second);
+
+GFC_REAL_4
+second (void)
+{
+ GFC_REAL_4 s;
+ cpu_time_4 (&s);
+ return s;
+}