123 	int n, ix, iy, hx, hy, lx, ly;  in csqrt()  local
132 	iy = hy & 0x7fffffff;  in csqrt()
135 	if (ix >= 0x7ff00000 || iy >= 0x7ff00000) {  in csqrt()
137 		if (ISINF(iy, ly))  in csqrt()
149 	} else if ((iy | ly) == 0) {	/* y = 0 */  in csqrt()
157 	} else if (ix >= iy) {  in csqrt()
158 		n = (ix - iy) >> 20;  in csqrt()
165 		} else if (iy < 0x20b00000) {	/* y < 2**-500 */  in csqrt()
179 		n = (iy - ix) >> 20;  in csqrt()
183 			else if (iy >= 0x7fe00000)  in csqrt()
189 		} else if (iy >= 0x5f300000) {	/* y > 2**500 */  in csqrt()