1/* benchtime.h -- header file for MPFRbench
2
3Copyright 1999, 2001-2023 Free Software Foundation, Inc.
4Contributed by the AriC and Caramba projects, INRIA.
5
6This file is part of the GNU MPFR Library.
7
8The GNU MPFR Library is free software; you can redistribute it and/or modify
9it under the terms of the GNU Lesser General Public License as published by
10the Free Software Foundation; either version 3 of the License, or (at your
11option) any later version.
12
13The GNU MPFR Library is distributed in the hope that it will be useful, but
14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
16License for more details.
17
18You should have received a copy of the GNU Lesser General Public License
19along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
20https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23
24/* compute the time to run accurately niter calls of the function for any
25   number of inputs */
26#define DECLARE_ACCURATE_TIME_NOP(func, funccall)      \
27unsigned long int ACCURATE_TIME_NOP##func( unsigned long int niter, int n, mpfr_t* z, mpfr_t* x, mpfr_t* y, int nop);\
28unsigned long int ACCURATE_TIME_NOP##func( unsigned long int niter, int n, mpfr_t* z, mpfr_t* x, mpfr_t* y, int nop)\
29{                                             \
30  unsigned long int ti, i;  int kn;           \
31  unsigned long int t0 = get_cputime ();      \
32  for (i = niter, kn=0; i > 0; i--)           \
33    {                                         \
34      funccall;                               \
35      kn++; if (kn==n) kn = 0;                \
36    }                                         \
37  ti = get_cputime () - t0;                   \
38  /* following lines are appended to avoid warnings but minimize the number \
39     of macros */                             \
40  if (nop==2) y = NULL;                       \
41  return ti;                                  \
42}
43
44/* address of the function to time accurately niter calls of func */
45#define ADDR_ACCURATE_TIME_NOP(func) ACCURATE_TIME_NOP##func
46
47/* address of the function to time one call of func */
48#define ADDR_TIME_NOP(func) TIME_NOP##func
49
50
51/* compute the time to run one only call of the function with two inputs  */
52#define DECLARE_TIME_NOP(func, funcall, nop)                  \
53 DECLARE_ACCURATE_TIME_NOP(func, funcall)                      \
54 double TIME_NOP##func(int n, mpfr_t* z, mpfr_t* x, mpfr_t* y); \
55 double TIME_NOP##func(int n, mpfr_t* z, mpfr_t* x, mpfr_t* y)  \
56 {                                                             \
57  double t; unsigned long int nbcall, mytime;                  \
58    for (nbcall = 1, mytime=0; mytime<250000; nbcall<<=1)      \
59      {                                                        \
60       mytime = ACCURATE_TIME_NOP##func(nbcall, n, z, x, y, nop);  \
61      }                                                        \
62      t = (double) mytime/ nbcall ;                            \
63   return t;                                                   \
64 }
65
66/* compute the time to run accurately niter calls of the function */
67/* functions with 2 operands */
68#define DECLARE_TIME_2OP(func)   DECLARE_TIME_NOP(func, func(z[kn],x[kn],y[kn], MPFR_RNDN), 2 )
69/* functions with 1 operand */
70#define DECLARE_TIME_1OP(func)   DECLARE_TIME_NOP(func, func(z[kn],x[kn], MPFR_RNDN), 1 )
71