51 lines
1.8 KiB
Objective-C
51 lines
1.8 KiB
Objective-C
/*
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* PDP-8/E Simulator
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*
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* Copyright © 1994-2015 Bernhard Baehr
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*
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* FloatingPointNumber.h - Floating point numbers for format conversions
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*
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* This file is part of PDP-8/E Simulator.
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*
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* PDP-8/E Simulator is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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@interface FloatingPointNumber : NSObject
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{
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@private
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int exponent; // Exponent of the floating point number
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int bias; // Bias of the exponent
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// Bias == 0 means that exponent is a 12-bit two complement number
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BOOL negative; // Sign of the floating point number
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BOOL twoComplementMantissa; // True iff mantissa is given in two complement
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unsigned long long mantissa; // 64-bit mantissa
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}
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+ (FloatingPointNumber *) floatingPointNumberWithExponent:(int)e bias:(int)b negative:(BOOL)n
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twoComplementMantissa:(BOOL)tcm mantissa:(unsigned long long)m;
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+ (FloatingPointNumber *) floatingPointNumberFromString:(NSString *)string withBias:(int)bias
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withTwoComplementMantissa:(BOOL)tcm error:(NSString **)error;
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- (FloatingPointNumber *) initWithExponent:(int)e bias:(int)b negative:(BOOL)n
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twoComplementMantissa:(BOOL)tcm mantissa:(unsigned long long)m;
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- (NSString *) stringValueWithPrecision:(int)precision;
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- (int) exponent;
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- (int) bias;
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- (BOOL) negative;
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- (BOOL) twoComplementMantissa;
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- (unsigned long long) mantissa;
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@end
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