x86/math-emu/fpu_trig.c

40 	int tag, st0_tag = TAG_Valid;
51 	tag = FPU_u_div(st0_ptr, &CONST_PI2, &tmp, PR_64_BITS | RC_CHOP | 0x3f,
54 	FPU_round_to_int(&tmp, tag);	/* Fortunately, this can't overflow
154 	int tag;
174 	tag = FPU_normalize(dest);
175 	FPU_settagi(deststnr, tag);
233 static void f2xm1(FPU_REG *st0_ptr, u_char tag)
239 	if (tag == TAG_Valid) {
253 	if (tag == TAG_Zero)
256 	if (tag == TAG_Special)
257 		tag = FPU_Special(st0_ptr);
259 	switch (tag) {
272 		single_arg_error(st0_ptr, tag);
455 		u_char tag;
470 		tag = wm_sqrt(st0_ptr, 0, 0, control_word, SIGN_POS);
472 		FPU_settag0(tag);
508 	int flags, tag;
530 		tag = FPU_normalize(st0_ptr);
532 		FPU_settag0(tag);
550 static int f_sin(FPU_REG *st0_ptr, u_char tag)
554 	if (tag == TAG_Valid) {
580 	if (tag == TAG_Zero) {
585 	if (tag == TAG_Special)
586 		tag = FPU_Special(st0_ptr);
588 	if (tag == TW_Denormal) {
596 		tag = FPU_round(st0_ptr, 1, 0, FULL_PRECISION, arg_sign);
598 		FPU_settag0(tag);
601 	} else if (tag == TW_Infinity) {
606 		single_arg_error(st0_ptr, tag);
611 static void fsin(FPU_REG *st0_ptr, u_char tag)
613 	f_sin(st0_ptr, tag);
616 static int f_cos(FPU_REG *st0_ptr, u_char tag)
622 	if (tag == TAG_Valid) {
662 	} else if (tag == TAG_Zero) {
668 	if (tag == TAG_Special)
669 		tag = FPU_Special(st0_ptr);
671 	if (tag == TW_Denormal) {
676 	} else if (tag == TW_Infinity) {
681 		single_arg_error(st0_ptr, tag);	/* requires st0_ptr == &st(0) */
695 	u_char tag;
714 		tag = FPU_Special(st0_ptr);
716 		tag = st0_tag;
718 	if (tag == TW_NaN) {
721 	} else if (tag == TW_Infinity) {
793 		int tag;
820 				tag = FPU_u_div(&st0, &st1, &tmp,
826 					FPU_round_to_int(&tmp, tag);	/* Fortunately, this can't
897 			tag =
902 			FPU_round_to_int(&tmp, tag);	/* Fortunately, this can't
935 		tag = FPU_normalize_nuo(&tmp);
940 		if ((exponent16(&tmp) <= EXP_UNDER) && (tag != TAG_Zero)
943 			tag = arith_underflow(st0_ptr);
945 			FPU_settag0(tag);
947 		} else if ((exponent16(&tmp) > EXP_UNDER) || (tag == TAG_Zero)) {
951 			tag =
954 		FPU_settag0(tag);
1031 	int e, tag;
1059 				tag = FPU_normalize_nuo(&exponent);
1062 				tag =
1063 				    FPU_mul(&exponent, tag, 1, FULL_PRECISION);
1064 				if (tag >= 0)
1065 					FPU_settagi(1, tag);
1201 	int tag;
1241 					tag =
1247 					if (tag >= 0)
1248 						FPU_settagi(1, tag);