Lines Matching refs:xdiff
379 register double xdiff, ydiff, zdiff; in v3_sqdistance() local
385 xdiff = p1->x - p2->x; in v3_sqdistance()
389 return xdiff * xdiff + ydiff * ydiff + zdiff * zdiff; in v3_sqdistance()
397 register double xdiff, ydiff, zdiff; in v3_distance() local
403 xdiff = p1->x - p2->x; in v3_distance()
407 return sqrt (xdiff * xdiff + ydiff * ydiff + zdiff * zdiff); in v3_distance()
418 register double xdiff; in v3_close() local
424 xdiff = v1->x - v2->x; in v3_close()
425 xdiff *= xdiff; in v3_close()
426 if (xdiff > sqdistance) { in v3_close()
435 return (xdiff + ydiff + zdiff * zdiff) <= sqdistance; in v3_close()