mirror of https://github.com/mpv-player/mpv
50 lines
869 B
C
50 lines
869 B
C
// File written by Michael Niedermayer and its under GPL
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// simple file compare program, it finds the number of rounding errors
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// and dies if there is a larger error ( ABS(a-b)>1 )
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#include <stdio.h>
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// FIXME no checks but its just for debuging so who cares ;)
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int main(int argc, char **argv)
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{
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FILE *f0, *f1;
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int dif=0;
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if(argc!=3)
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{
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printf("compare <file1> <file2>\n");
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exit(2);
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}
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f0= fopen(argv[1], "rb");
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f1= fopen(argv[2], "rb");
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for(;;)
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{
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int c0= fgetc(f0);
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int c1= fgetc(f1);
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int d= c0-c1;
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if(c0<0 && c1<0) break;
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if(c0<0 || c1<0)
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{
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printf("FATAL error, files have different size!\n");
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exit(1);
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}
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if(d<0) d=-d; // ABS
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if(d>1)
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{
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printf("FATAL error, too large differnce found!\n");
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exit(1);
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}
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if(d) dif++;
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}
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fclose(f0);
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fclose(f1);
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printf("%d (+/-1)differences found\n", dif);
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exit(0);
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} |