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/* -*- mode: objc; coding: utf-8 -*- */
/* Étoilisp/Mulklisp, a Common Lisp subset for the Étoilé runtime.
* Copyright (C) 2008 Matthias Andreas Benkard.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#import "MLKDynamicContext.h"
#import "MLKInteger.h"
#import "MLKPackage.h"
#import "runtime-compatibility.h"
#import "util.h"
#import <Foundation/NSString.h>
@implementation MLKInteger
-(MLKInteger *) initWithMPZ:(mpz_t)mpz
{
self = [super init];
mpz_init_set (value, mpz);
return self;
}
-(MLKInteger *) initWithInt:(int)intValue
{
self = [super init];
mpz_init_set_si (value, intValue);
return self;
}
-(MLKInteger *) initWithString:(NSString *)string
negative:(BOOL)negative
base:(unsigned int)base
{
self = [super init];
mpz_init_set_str (value, [string UTF8String], base);
if (negative) mpz_neg (value, value);
return self;
}
+(MLKInteger *) integerWithMPZ:(mpz_t)mpz
{
return LAUTORELEASE ([[MLKInteger alloc] initWithMPZ:mpz]);
}
+(MLKInteger *) integerWithString:(NSString *)string
negative:(BOOL)negative
base:(unsigned int)base
{
return LAUTORELEASE ([[MLKInteger alloc] initWithString:string
negative:negative
base:base]);
}
+(MLKInteger *) integerWithInt:(int)intValue
{
return LAUTORELEASE ([[MLKInteger alloc] initWithInt:intValue]);
}
#define DEFINE_MPZ_TWOARG_OPERATION(SELECTOR, GMPFUN) \
DEFINE_GMP_OPERATION (SELECTOR (MLKNumber *)arg, \
mpz, \
GMPFUN (mpval, self->value, ((MLKInteger*)arg)->value), \
MLKNumber, \
MLKInteger, \
integerWithMPZ:)
DEFINE_MPZ_TWOARG_OPERATION (add:, mpz_add)
DEFINE_MPZ_TWOARG_OPERATION (subtract:, mpz_sub)
DEFINE_MPZ_TWOARG_OPERATION (multiplyWith:, mpz_mul)
DEFINE_MPZ_TWOARG_OPERATION (divideBy:, mpz_div)
#define DEFINE_MPZ_TWOARG_INTONLY_OPERATION(SELECTOR, GMPFUN) \
DEFINE_GMP_OPERATION (SELECTOR (MLKInteger *)arg, \
mpz, \
GMPFUN (mpval, self->value, ((MLKInteger*)arg)->value), \
MLKInteger, \
MLKInteger, \
integerWithMPZ:)
DEFINE_MPZ_TWOARG_INTONLY_OPERATION (mod:, mpz_mod)
DEFINE_MPZ_TWOARG_INTONLY_OPERATION (exactlyDivideBy:, mpz_divexact)
DEFINE_MPZ_TWOARG_INTONLY_OPERATION (gcd:, mpz_gcd)
DEFINE_MPZ_TWOARG_INTONLY_OPERATION (lcm:, mpz_lcm)
-(MLKInteger *) pow:(MLKInteger *)exponent
{
mpz_t mpz;
mpz_t i;
mpz_init_set_ui (mpz, 1);
mpz_init_set (i, exponent->value);
while (mpz_sgn (i) > 0)
{
mpz_mul (mpz, mpz, self->value);
mpz_sub_ui (i, i, 1);
}
MLKInteger *obj = [MLKInteger integerWithMPZ:mpz];
mpz_clear (mpz);
mpz_clear (i);
return obj;
}
-(BOOL) evenp
{
return mpz_even_p (self->value);
}
-(BOOL) oddp
{
return mpz_odd_p (self->value);
}
-(MLKInteger *) isqrt
{
mpz_t mpz;
mpz_init (mpz);
mpz_sqrt (mpz, self->value);
MLKInteger *obj = [MLKInteger integerWithMPZ:mpz];
mpz_clear (mpz);
return obj;
}
-(int) intValue
{
return mpz_get_si (value);
}
-(double) doubleValue
{
return mpz_get_d (value);
}
-(NSComparisonResult) compare:(MLKInteger *)arg
{
int cmp = mpz_cmp (self->value, arg->value);
if (cmp == 0)
return NSOrderedSame;
else if (cmp < 0)
return NSOrderedAscending;
else
return NSOrderedDescending;
}
-(BOOL) isEqual:(id)arg
{
return ([arg isKindOfClass:[MLKInteger class]]
&& [self compare:arg] == 0);
}
-(NSString *) description
{
return [self descriptionWithBase:10];
}
-(NSString *) descriptionWithBase:(int)base
{
NSString *str;
char cstr[mpz_sizeinbase (self->value, base) + 2];
mpz_get_str (cstr, base, self->value);
str = [NSString stringWithUTF8String:cstr];
return str;
}
-(NSString *) descriptionForLisp
{
MLKInteger *base = [[MLKDynamicContext currentContext]
valueForSymbol:[[MLKPackage
findPackage:@"COMMON-LISP"]
intern:@"*PRINT-BASE*"]];
return [self descriptionWithBase:[base intValue]];
}
-(void) dealloc
{
mpz_clear (value);
[super dealloc];
}
@end
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