C++ (Cpp) single_arg_2_error Exemples

Exemple #1

static void fptan(FPU_REG *st0_ptr, u_char st0_tag)
{
	FPU_REG *st_new_ptr;
	int q;
	u_char arg_sign = getsign(st0_ptr);

	
	if (st0_tag == TAG_Empty) {
		FPU_stack_underflow();	
		if (control_word & CW_Invalid) {
			st_new_ptr = &st(-1);
			push();
			FPU_stack_underflow();	
		}
		return;
	}

	if (STACK_OVERFLOW) {
		FPU_stack_overflow();
		return;
	}

	if (st0_tag == TAG_Valid) {
		if (exponent(st0_ptr) > -40) {
			if ((q = trig_arg(st0_ptr, 0)) == -1) {
				
				return;
			}

			poly_tan(st0_ptr);
			setsign(st0_ptr, (q & 1) ^ (arg_sign != 0));
			set_precision_flag_up();	
		} else {
			
			

		      denormal_arg:

			FPU_to_exp16(st0_ptr, st0_ptr);

			st0_tag =
			    FPU_round(st0_ptr, 1, 0, FULL_PRECISION, arg_sign);
			FPU_settag0(st0_tag);
		}
		push();
		FPU_copy_to_reg0(&CONST_1, TAG_Valid);
		return;
	}

	if (st0_tag == TAG_Zero) {
		push();
		FPU_copy_to_reg0(&CONST_1, TAG_Valid);
		setcc(0);
		return;
	}

	if (st0_tag == TAG_Special)
		st0_tag = FPU_Special(st0_ptr);

	if (st0_tag == TW_Denormal) {
		if (denormal_operand() < 0)
			return;

		goto denormal_arg;
	}

	if (st0_tag == TW_Infinity) {
		
		if (arith_invalid(0) >= 0) {
			st_new_ptr = &st(-1);
			push();
			arith_invalid(0);
		}
		return;
	}

	single_arg_2_error(st0_ptr, st0_tag);
}

Exemple #2

Fichier : fpu_trig.c Projet : 0-T-0/ps4-linux

static void fptan(FPU_REG *st0_ptr, u_char st0_tag)
{
	FPU_REG *st_new_ptr;
	int q;
	u_char arg_sign = getsign(st0_ptr);

	/* Stack underflow has higher priority */
	if (st0_tag == TAG_Empty) {
		FPU_stack_underflow();	/* Puts a QNaN in st(0) */
		if (control_word & CW_Invalid) {
			st_new_ptr = &st(-1);
			push();
			FPU_stack_underflow();	/* Puts a QNaN in the new st(0) */
		}
		return;
	}

	if (STACK_OVERFLOW) {
		FPU_stack_overflow();
		return;
	}

	if (st0_tag == TAG_Valid) {
		if (exponent(st0_ptr) > -40) {
			if ((q = trig_arg(st0_ptr, 0)) == -1) {
				/* Operand is out of range */
				return;
			}

			poly_tan(st0_ptr);
			setsign(st0_ptr, (q & 1) ^ (arg_sign != 0));
			set_precision_flag_up();	/* We do not really know if up or down */
		} else {
			/* For a small arg, the result == the argument */
			/* Underflow may happen */

		      denormal_arg:

			FPU_to_exp16(st0_ptr, st0_ptr);

			st0_tag =
			    FPU_round(st0_ptr, 1, 0, FULL_PRECISION, arg_sign);
			FPU_settag0(st0_tag);
		}
		push();
		FPU_copy_to_reg0(&CONST_1, TAG_Valid);
		return;
	}

	if (st0_tag == TAG_Zero) {
		push();
		FPU_copy_to_reg0(&CONST_1, TAG_Valid);
		setcc(0);
		return;
	}

	if (st0_tag == TAG_Special)
		st0_tag = FPU_Special(st0_ptr);

	if (st0_tag == TW_Denormal) {
		if (denormal_operand() < 0)
			return;

		goto denormal_arg;
	}

	if (st0_tag == TW_Infinity) {
		/* The 80486 treats infinity as an invalid operand */
		if (arith_invalid(0) >= 0) {
			st_new_ptr = &st(-1);
			push();
			arith_invalid(0);
		}
		return;
	}

	single_arg_2_error(st0_ptr, st0_tag);
}