32e1b2e297
There is a need in some utilities to have a way of accepting both types of decimal points "." and ",". The only way seems to be to rebuild strtod(). This new function will accept "123.456" and "123,456" as 123.456 and considers them the same number. It means we lose thousands separator, but this is rarely used. test scripts are added to check the function returns the proper values. There was simpler predecessor that got stuck on negative 0 or -0.123 which these tests flushed out. References:
46 lines
972 B
C
46 lines
972 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include "strutils.h"
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struct strtod_tests {
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char *string;
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double result;
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};
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struct strtod_tests tests[] = {
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{"123", 123.0},
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{"-123", -123.0},
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{"12.34", 12.34},
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{"-12.34", -12.34},
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{".34", 0.34},
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{"-.34", -0.34},
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{"12,34", 12.34},
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{"-12,34", -12.34},
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{",34", 0.34},
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{"-,34", -0.34},
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{"0", 0.0},
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{".0", 0.0},
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{"0.0", 0.0},
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{NULL, 0.0}
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};
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int main(int argc, char *argv[])
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{
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int i;
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double val;
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for(i=0; tests[i].string != NULL; i++) {
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if(strtod_nol_or_err(tests[i].string, "Cannot parse number") !=
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tests[i].result) {
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fprintf(stderr, "FAIL: strtod_nol_or_err(\"%s\") != %f\n",
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tests[i].string, tests[i].result);
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return EXIT_FAILURE;
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}
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//fprintf(stderr, "PASS: strtod_nol for %s\n", tests[i].string);
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}
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return EXIT_SUCCESS;
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}
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