29 int add_sub_specials(FPU_REG const *a, u_char taga, u_char signa,
43 	u_char signa = getsign(a);  in FPU_add()  local
53 		if (!(signa ^ signb)) {  in FPU_add()
56 			    FPU_u_add(a, b, dest, control_w, signa, expa, expb);  in FPU_add()
72 				    FPU_u_sub(a, b, dest, control_w, signa,  in FPU_add()
124 	return add_sub_specials(a, taga, signa, b, tagb, signb,  in FPU_add()
133 	u_char taga, tagb, signa, signb, saved_sign, sign;  in FPU_sub()  local
151 	signa = getsign(a);  in FPU_sub()
155 		signa ^= SIGN_NEG;  in FPU_sub()
180 		switch ((((int)signa) * 2 + signb) / SIGN_NEG) {  in FPU_sub()
186 				    FPU_u_sub(a, b, dest, control_w, signa,  in FPU_sub()
196 				sign = signa ^ SIGN_NEG;  in FPU_sub()
266 	return add_sub_specials(a, taga, signa, b, tagb, signb ^ SIGN_NEG,  in FPU_sub()
271 int add_sub_specials(FPU_REG const *a, u_char taga, u_char signa,  in add_sub_specials()  argument
282 			u_char different_signs = signa ^ signb;  in add_sub_specials()
291 				setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()
313 		setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()
317 		if ((tagb != TW_Infinity) || (signa == signb)) {  in add_sub_specials()
319 			setsign(dest, signa);	/* signa may differ from the sign of a. */  in add_sub_specials()