mirror of https://github.com/mpv-player/mpv
58 lines
959 B
C
58 lines
959 B
C
// File written by Michael Niedermayer and it is 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 too large an error ( ABS(a-b)>1 ).
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#include <stdio.h>
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#include <stdlib.h>
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// FIXME: No checks but it is just for debugging 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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short c0;
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short c1;
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int d;
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int e0= fread(&c0, 2, 1, f0);
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int e1= fread(&c1, 2, 1, f1);
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d=c0-c1;
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if(e0==0 && e1==0) break;
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if(e0==0 || e1==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 a difference found (%d)!\n", d);
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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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}
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