tests/math/chart-get-ticks-format-test.c

   1 /* PSPP - a program for statistical analysis.
   2    Copyright (C) 2015 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include "math/chart-geometry.h"
  21 #include "libpspp/compiler.h"
  22
  23 struct range {
  24   double lower;
  25   double interval;
  26   int nticks;
  27 };
  28
  29 struct range tv[] = {
  30   {       1000.0,            10.0,     10},
  31   {      10000.0,            10.0,     10},
  32   {     100000.0,            10.0,     10},
  33   {    1000000.0,            10.0,     10},
  34   {   10000000.0,            10.0,     10},
  35   {  100000000.0,            10.0,     10},
  36   {          0.1,            0.01,     10},
  37   {         0.01,           0.001,     10},
  38   {        0.001,          0.0001,     10},
  39   {       0.0001,         0.00001,     10},
  40   {      0.00001,       0.0000001,     10},
  41   {    0.0000001,      0.00000001,     10},
  42   {         -5.0,             1.0,     10},
  43   {         -5.0,             0.5,     10},
  44   {         -5.0,             0.2,      9},
  45   {         -5.0,             2.0,     10},
  46   {         -0.5,             0.1,      9},
  47   {      0.975E9,         0.005E9,      9},
  48   {      0.970E9,          0.01E9,      9},
  49   {         -4E7,             1E7,      9},
  50   {         -3E7,           0.5E7,      9},
  51   {    1.001E-95,      0.0002E-95,     10},
  52   {     1.001E98,       0.0002E98,     10},
  53   {         5984,         0.00001,     10},
  54   {         3E33,           1E-22,     10},
  55   {         3E33,            1000,     10},
  56   {          0.1,           2E-42,     10},
  57   {          0.0,             0.0,     -1}
  58 };
  59
  60 int
  61 main (int argc UNUSED, char **argv UNUSED)
  62 {
  63   char *fs;
  64   double scale;
  65   int i = 0;
  66   double lower, interval;
  67   int nticks;
  68
  69   for(i=0;tv[i].nticks > 0;i++)
  70     {
  71       lower = tv[i].lower;
  72       interval = tv[i].interval;
  73       nticks = tv[i].nticks;
  74       fs = chart_get_ticks_format (lower, interval, nticks, &scale);
  75       printf("lower: %lg, interval: %lg, nticks: %d, fs: %s, scale: %lg, ex: ",
  76              lower, interval, nticks, fs, scale);
  77       printf(fs,(lower + 3 * interval)*scale);
  78       printf(", ex 2: ");
  79       printf(fs,(lower + 4 * interval)*scale);
  80       printf("\n");
  81       free(fs);
  82     }
  83
  84   return 0;
  85 }