64     int* mag_buf[3];  in cvCanny()  local
128     mag_buf[0] = (int*)buffer;  in cvCanny()
129     mag_buf[1] = mag_buf[0] + size.width + 2;  in cvCanny()
130     mag_buf[2] = mag_buf[1] + size.width + 2;  in cvCanny()
131     map = (uchar*)(mag_buf[2] + size.width + 2);  in cvCanny()
137     memset( mag_buf[0], 0, (size.width+2)*sizeof(int) );  in cvCanny()
165         int* _mag = mag_buf[(i > 0) + 1] + 1;  in cvCanny()
212         _mag = mag_buf[1] + 1; // take the central row  in cvCanny()
216         magstep1 = (int)(mag_buf[2] - mag_buf[1]);  in cvCanny()
217         magstep2 = (int)(mag_buf[0] - mag_buf[1]);  in cvCanny()
298         _mag = mag_buf[0];  in cvCanny()
299         mag_buf[0] = mag_buf[1];  in cvCanny()
300         mag_buf[1] = mag_buf[2];  in cvCanny()
301         mag_buf[2] = _mag;  in cvCanny()