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1 /* Implementation of the ETIME intrinsic.
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2 Copyright (C) 2004-2020 Free Software Foundation, Inc.
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3 Contributed by Steven G. Kargl <kargls@comcast.net>.
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4
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5 This file is part of the GNU Fortran runtime library (libgfortran).
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6
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7 Libgfortran is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public
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9 License as published by the Free Software Foundation; either
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10 version 3 of the License, or (at your option) any later version.
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11
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12 Libgfortran is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 #include "libgfortran.h"
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27 #include "time_1.h"
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28
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29 extern void etime_sub (gfc_array_r4 *t, GFC_REAL_4 *result);
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30 iexport_proto(etime_sub);
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31
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32 void
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33 etime_sub (gfc_array_r4 *t, GFC_REAL_4 *result)
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34 {
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35 GFC_REAL_4 tu, ts, tt, *tp;
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36 long user_sec, user_usec, system_sec, system_usec;
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37
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38 if (((GFC_DESCRIPTOR_EXTENT(t,0))) < 2)
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39 runtime_error ("Insufficient number of elements in TARRAY.");
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40
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41 if (gf_cputime (&user_sec, &user_usec, &system_sec, &system_usec) == 0)
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42 {
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43 tu = (GFC_REAL_4)(user_sec + 1.e-6 * user_usec);
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44 ts = (GFC_REAL_4)(system_sec + 1.e-6 * system_usec);
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45 tt = tu + ts;
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46 }
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47 else
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48 {
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49 tu = (GFC_REAL_4)-1.0;
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50 ts = (GFC_REAL_4)-1.0;
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51 tt = (GFC_REAL_4)-1.0;
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52 }
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53
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54 tp = t->base_addr;
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55
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56 *tp = tu;
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57 tp += GFC_DESCRIPTOR_STRIDE(t,0);
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58 *tp = ts;
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59 *result = tt;
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60 }
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61 iexport(etime_sub);
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62
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63 extern GFC_REAL_4 etime (gfc_array_r4 *t);
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64 export_proto(etime);
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65
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66 GFC_REAL_4
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67 etime (gfc_array_r4 *t)
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68 {
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69 GFC_REAL_4 val;
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70 etime_sub (t, &val);
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71 return val;
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72 }
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