358 	register FPU_REG *st1_ptr = st0_ptr;	/* anticipate */  in fxtract()  local
371 		sign = getsign(st1_ptr);  in fxtract()
372 		reg_copy(st1_ptr, st_new_ptr);  in fxtract()
403 		sign = getsign(st1_ptr);  in fxtract()
404 		FPU_to_exp16(st1_ptr, st_new_ptr);  in fxtract()
780 	FPU_REG *st1_ptr = &st(1);  in do_fprem()  local
797 		st1_sign = FPU_to_exp16(st1_ptr, &st1);  in do_fprem()
957 		st1_tag = FPU_Special(st1_ptr);  in do_fprem()
1015 	real_2op_NaN(st1_ptr, st1_tag, 0, st1_ptr);  in do_fprem()
1022 	FPU_REG *st1_ptr = &st(1), exponent;  in fyl2x()  local
1062 				sign = getsign(st1_ptr);  in fyl2x()
1064 					FPU_to_exp16(st1_ptr, st1_ptr);  in fyl2x()
1067 					setexponent16(st1_ptr,  in fyl2x()
1068 						      exponent(st1_ptr));  in fyl2x()
1069 				poly_l2(st0_ptr, st1_ptr, sign);  in fyl2x()
1085 		st1_tag = FPU_Special(st1_ptr);  in fyl2x()
1098 				sign = getsign(st1_ptr) ^ SIGN_NEG;  in fyl2x()
1102 				setsign(st1_ptr, sign);  in fyl2x()
1107 			sign = getsign(st1_ptr);  in fyl2x()
1121 				setsign(st1_ptr, sign);  in fyl2x()
1140 			u_char sign = getsign(st1_ptr);  in fyl2x()
1147 			setsign(st1_ptr, sign);  in fyl2x()
1170 			changesign(st1_ptr);  in fyl2x()
1178 			sign = getsign(st1_ptr);  in fyl2x()
1183 			changesign(st1_ptr);  in fyl2x()
1193 	FPU_REG *st1_ptr = &st(1);  in fpatan()  local
1201 		poly_atan(st0_ptr, st0_tag, st1_ptr, st1_tag);  in fpatan()
1211 		st1_tag = FPU_Special(st1_ptr);  in fpatan()
1228 		u_char sign = getsign(st1_ptr);  in fpatan()
1234 					setpositive(st1_ptr);  in fpatan()
1237 						      st1_ptr, FULL_PRECISION,  in fpatan()
1251 					setsign(st1_ptr, sign);	/* An 80486 preserves the sign */  in fpatan()
1266 		setsign(st1_ptr, sign);  in fpatan()
1269 		u_char sign = getsign(st1_ptr);  in fpatan()
1281 		setsign(st1_ptr, sign);  in fpatan()
1284 		u_char sign = getsign(st1_ptr);  in fpatan()
1290 		setsign(st1_ptr, sign);  in fpatan()
1314 	FPU_REG *st1_ptr = &st(1), a, b;  in fyl2xp1()  local
1322 		sign1 = getsign(st1_ptr);  in fyl2xp1()
1325 		FPU_to_exp16(st1_ptr, &b);  in fyl2xp1()
1327 		if (poly_l2p1(sign, sign1, &a, &b, st1_ptr))  in fyl2xp1()
1337 		st1_tag = FPU_Special(st1_ptr);  in fyl2xp1()
1357 			setsign(st0_ptr, getsign(st0_ptr) ^ getsign(st1_ptr));  in fyl2xp1()
1386 					changesign(st1_ptr);  in fyl2xp1()
1395 					changesign(st1_ptr);  in fyl2xp1()
1408 					changesign(st1_ptr);  in fyl2xp1()
1417 					changesign(st1_ptr);  in fyl2xp1()
1463 			u_char sign = getsign(st1_ptr);  in fyl2xp1()
1465 			setsign(st1_ptr, sign);  in fyl2xp1()
1482 	FPU_REG *st1_ptr = &st(1);  in fscale()  local
1497 		if (exponent(st1_ptr) > 30) {  in fscale()
1500 			if (signpositive(st1_ptr)) {  in fscale()
1513 		reg_copy(st1_ptr, &tmp);  in fscale()
1516 		scale = signnegative(st1_ptr) ? -tmp.sigl : tmp.sigl;  in fscale()
1530 		st1_tag = FPU_Special(st1_ptr);  in fscale()
1557 			if (signpositive(st1_ptr))  in fscale()
1565 			real_2op_NaN(st1_ptr, st1_tag, 0, st0_ptr);  in fscale()
1579 			if (signpositive(st1_ptr))  in fscale()
1584 			real_2op_NaN(st1_ptr, st1_tag, 0, st0_ptr);  in fscale()
1598 			if (signnegative(st1_ptr))  in fscale()
1603 			real_2op_NaN(st1_ptr, st1_tag, 0, st0_ptr);  in fscale()
1608 			real_2op_NaN(st1_ptr, st1_tag, 0, st0_ptr);  in fscale()