28 int add_sub_specials(FPU_REG const *a, u_char taga, u_char signa,
42 	u_char signa = getsign(a);  in FPU_add()  local
52 		if (!(signa ^ signb)) {  in FPU_add()
55 			    FPU_u_add(a, b, dest, control_w, signa, expa, expb);  in FPU_add()
71 				    FPU_u_sub(a, b, dest, control_w, signa,  in FPU_add()
123 	return add_sub_specials(a, taga, signa, b, tagb, signb,  in FPU_add()
132 	u_char taga, tagb, signa, signb, saved_sign, sign;  in FPU_sub()  local
150 	signa = getsign(a);  in FPU_sub()
154 		signa ^= SIGN_NEG;  in FPU_sub()
179 		switch ((((int)signa) * 2 + signb) / SIGN_NEG) {  in FPU_sub()
185 				    FPU_u_sub(a, b, dest, control_w, signa,  in FPU_sub()
195 				sign = signa ^ SIGN_NEG;  in FPU_sub()
265 	return add_sub_specials(a, taga, signa, b, tagb, signb ^ SIGN_NEG,  in FPU_sub()
270 int add_sub_specials(FPU_REG const *a, u_char taga, u_char signa,  in add_sub_specials()  argument
281 			u_char different_signs = signa ^ signb;  in add_sub_specials()
290 				setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()
312 		setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()
316 		if ((tagb != TW_Infinity) || (signa == signb)) {  in add_sub_specials()
318 			setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()