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added samples/uint.cpp samples/int.cpp samples/Makefile

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changed Int::Div -- a remainder is not returning now but taking as a parameter (a pointer or reference)
changed order in parameters in UInt::AddTwoInts
added Int::AddInt
added Int::AddTwoInts
added Int::SubInt
changed Int::AddOne and Int::SubOne (much faster now)
fixed a bug in UInt::operator--() and Int::operator--() (there was adding instead of subtracting)


git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@13 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa
2007-02-05 17:40:23 +00:00
parent b59de36095
commit b4bf76065c
6 changed files with 351 additions and 75 deletions
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30
samples/Makefile Normal file
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CC = g++
CFLAGS = -Wall -pedantic -s -O2 -I..
.SUFFIXES: .cpp .o
.cpp.o:
$(CC) -c $(CFLAGS) $<
all: uint int
uint: uint.o
$(CC) -o uint $(CFLAGS) uint.o
int: int.o
$(CC) -o int $(CFLAGS) int.o
uint.o: uint.cpp
int.o: int.cpp
clean:
rm -f *.o
rm -f *.s
rm -f uint
rm -f int
rm -f *.exe

90
samples/int.cpp Normal file
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#include <ttmath/ttmathint.h>
#include <iostream>
void SimpleCalculating(const ttmath::Int<2> & a, const ttmath::Int<2> & b)
{
std::cout << "Simple calculating" << std::endl;
std::cout << "a = " << a << std::endl;
std::cout << "b = " << b << std::endl;
std::cout << "a + b = " << a+b << std::endl;
std::cout << "a - b = " << a-b << std::endl;
std::cout << "a * b = " << a*b << std::endl;
std::cout << "a / b = " << a/b << std::endl;
}
void CalculatingWithCarry(const ttmath::Int<2> & a, const ttmath::Int<2> & b)
{
ttmath::Int<2> atemp;
std::cout << "Calculating with carry" << std::endl;
std::cout << "a = " << a << std::endl;
std::cout << "b = " << b << std::endl;
atemp = a;
if( !atemp.Add(b) )
std::cout << "a + b = " << atemp << std::endl;
else
std::cout << "a + b = (carry: the result is too big) " << atemp << std::endl;
atemp = a;
if( !atemp.Sub(b) )
std::cout << "a - b = " << atemp << std::endl;
else
std::cout << "a - b = (carry: 'a' was smaller than 'b') " << atemp << std::endl;
atemp = a;
if( !atemp.Mul(b) )
std::cout << "a * b = " << atemp << std::endl;
else
std::cout << "a * b = (carry: the result is too big) " << std::endl;
// it have no sense to print 'atemp' (it's undefined)
atemp = a;
if( !atemp.Div(b) )
std::cout << "a / b = " << atemp << std::endl;
else
std::cout << "a / b = (division by zero) " << std::endl;
}
int main()
{
// on 32bit platforms: 'a' and 'b' have 2-words (two 32bit words)
// in other words a,b are from <-2^63, 2^63 - 1>
ttmath::Int<2> a,b;
// conversion from 'const char *'
a = "123456";
b = "98767878";
SimpleCalculating(a,b);
// 'a' will have the max value which can be held in this type
a.SetMaxValue();
// conversion from 'int'
b = 10;
CalculatingWithCarry(a,b);
}
/*
the result:
Simple calculating
a = 123456
b = 98767878
a + b = 98891334
a - b = -98644422
a * b = 12193487146368
a / b = 0
Calculating with carry
a = 9223372036854775807
b = 10
a + b = (carry: the result is too big) -9223372036854775799
a - b = 9223372036854775797
a * b = (carry: the result is too big)
a / b = 922337203685477580
*/

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samples/uint.cpp Normal file
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#include <ttmath/ttmathuint.h>
#include <iostream>
void SimpleCalculating(const ttmath::UInt<2> & a, const ttmath::UInt<2> & b)
{
std::cout << "Simple calculating" << std::endl;
std::cout << "a = " << a << std::endl;
std::cout << "b = " << b << std::endl;
std::cout << "a + b = " << a+b << std::endl;
std::cout << "a - b = " << a-b << std::endl;
std::cout << "a * b = " << a*b << std::endl;
std::cout << "a / b = " << a/b << std::endl;
}
void CalculatingWithCarry(const ttmath::UInt<2> & a, const ttmath::UInt<2> & b)
{
ttmath::UInt<2> atemp;
std::cout << "Calculating with carry" << std::endl;
std::cout << "a = " << a << std::endl;
std::cout << "b = " << b << std::endl;
atemp = a;
if( !atemp.Add(b) )
std::cout << "a + b = " << atemp << std::endl;
else
// if there was a carry then atemp.Add(...) would have returned 1
std::cout << "a + b = (carry: the result is too big) " << atemp << std::endl;
atemp = a;
if( !atemp.Sub(b) )
std::cout << "a - b = " << atemp << std::endl;
else
std::cout << "a - b = (carry: 'a' was smaller than 'b') " << atemp << std::endl;
atemp = a;
if( !atemp.Mul(b) )
std::cout << "a * b = " << atemp << std::endl;
else
std::cout << "a * b = (carry: the result is too big) " << std::endl;
// it have no sense to print 'atemp' (it's undefined)
atemp = a;
if( !atemp.Div(b) )
std::cout << "a / b = " << atemp << std::endl;
else
std::cout << "a / b = (division by zero) " << std::endl;
}
int main()
{
// on 32bit platforms: 'a' and 'b' have 2-words (two 32bit words)
// in other words a,b are from <0, 2^64 - 1>
ttmath::UInt<2> a,b;
// conversion from 'const char *'
a = "123456";
b = "9876";
SimpleCalculating(a,b);
// 'a' will have the max value which can be held in this type
a.SetMaxValue();
// conversion from 'int'
b = 5;
CalculatingWithCarry(a,b);
}
/*
the result:
Simple calculating
a = 123456
b = 9876
a + b = 133332
a - b = 113580
a * b = 1219251456
a / b = 12
Calculating with carry
a = 18446744073709551615
b = 5
a + b = (carry: the result is too big) 4
a - b = 18446744073709551610
a * b = (carry: the result is too big)
a / b = 3689348814741910323
*/