x86/math-emu/reg_add_sub.c

31 		     FPU_REG * dest, int deststnr, int control_w);
37 int FPU_add(FPU_REG const *b, u_char tagb, int deststnr, int control_w)
40 	FPU_REG *dest = &st(deststnr);
79 				FPU_copy_to_regi(&CONST_Z, TAG_Zero, deststnr);
91 		FPU_settagi(deststnr, tag);
118 		if (deststnr == 0)
119 			return real_2op_NaN(b, tagb, deststnr, a);
121 			return real_2op_NaN(a, taga, deststnr, a);
125 				dest, deststnr, control_w);
134 	int diff, tag = 0, expa, expb, deststnr;
139 	deststnr = 0;
148 			deststnr = rm;
159 	dest = &st(deststnr);
189 				FPU_copy_to_regi(&CONST_Z, TAG_Zero, deststnr);
222 		FPU_settagi(deststnr, tag);
259 			return real_2op_NaN(b, tagb, deststnr, d1);
261 			return real_2op_NaN(a, taga, deststnr, d2);
263 			return real_2op_NaN(b, tagb, deststnr, d2);
267 				dest, deststnr, control_w);
273 		     FPU_REG * dest, int deststnr, int control_w)
284 			FPU_copy_to_regi(a, TAG_Zero, deststnr);
302 			FPU_settagi(deststnr, tagb);
314 		FPU_settagi(deststnr, taga);
318 			FPU_copy_to_regi(a, TAG_Special, deststnr);
323 		return arith_invalid(deststnr);
325 		FPU_copy_to_regi(b, TAG_Special, deststnr);