binlogop.c

来自「NIST Handwriting OCR Testbed」· C语言 代码 · 共 25 行

/*
# proc: nandbinimage - logically NANDs two binary bitmaps together, returning
# proc:                the results in a new image.
*/

#include <stdio.h>

/***************************************************************/
nandbinimage(xdata, rdata, fdata, iw, ih)
unsigned char **xdata, *rdata, *fdata;
int iw, ih;
{
   int size, i;
   unsigned char *rptr, *fptr,  *xptr;

   size = SizeFromDepth(iw, ih, 1);
   malloc_uchar(xdata, size, "nandbinimage : xdata");
   rptr = rdata;
   fptr = fdata;
   xptr = (*xdata);
   for(i = 0; i < size; i++){
      *xptr++ = *fptr++ & ~ *rptr++;
   }
}