libs-steptalk/Source/NSNumber+additions.m

/**
    NSNumber-additions.h
    Various methods for NSNumber
 
    Copyright (c) 2002 Free Software Foundation
   
    Written by: Stefan Urbanek <urbanek@host.sk>
    Date: 2000
   
    This file is part of the StepTalk project.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02111, USA.
    
 */

#import <StepTalk/NSNumber+additions.h>

#import <StepTalk/STExterns.h>
#import <StepTalk/STStructure.h>

#import <Foundation/NSException.h>

#include <math.h>

@implementation NSNumber (STAdditions)
- add:(NSNumber *)number
{
    return [NSNumber numberWithDouble:([self doubleValue] 
                                        + [number doubleValue])];
}
- subtract:(NSNumber *)number
{
    return [NSNumber numberWithDouble:([self doubleValue] 
                                        - [number doubleValue])];
}
- multiply:(NSNumber *)number
{
    return [NSNumber numberWithDouble:([self doubleValue] 
                                        * [number doubleValue])];
}
- divide:(NSNumber *)number
{
    if([number doubleValue] == 0.0)
    {
        [NSException raise:STGenericException
                     format:@"Division by zero"];
        return self;
    }
    

    return [NSNumber numberWithDouble:([self doubleValue] 
                                        / [number doubleValue])];
}

- modulo:(NSNumber *)number
{
    if([number doubleValue] == 0.0)
    {
        [NSException raise:STGenericException
                     format:@"Division by zero"];
        return self;
    }
    

    return [NSNumber numberWithDouble:(fmod([self doubleValue],
                                         [number doubleValue]))];
}
- (unsigned int)isLessThan:(NSNumber *)number
{
    return ([self doubleValue] < [number doubleValue]);
}

- (BOOL)isGreatherThan:(NSNumber *)number
{
    return ([self doubleValue] > [number doubleValue]);
}

- (BOOL)isLessOrEqualThan:(NSNumber *)number
{
    return ([self doubleValue] <= [number doubleValue]);
}
- (BOOL)isGreatherOrEqualThan:(NSNumber *)number
{
    return ([self doubleValue] >= [number doubleValue]);
}
@end


@implementation NSNumber (STLogicOperations)
- (unsigned int)or:(NSNumber *)number
{
    return ([self intValue] | [number intValue]);
}

- (unsigned int)and:(NSNumber *)number
{
    return ([self intValue] & [number intValue]);
}

- (unsigned int)not
{
    /* FIXME */
    return ![self intValue];
}

@end

@implementation NSNumber (STStructure)
- rangeWith:(int)length
{
    return [STStructure structureWithRange:NSMakeRange([self intValue], length)];
}
- pointWith:(float)y
{
    return [STStructure structureWithPoint:NSMakePoint([self floatValue], y)];
}
- sizeWith:(float)h
{
    return [STStructure structureWithSize:NSMakeSize([self floatValue], h)];
}
@end