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Betreff: Discussion about Java Floating Point?
To core-libs-dev@openjdk.java.net,
In terms of floating point, it seems there are thus
three (3) phenomena that are relevant.
1) Arithmetic on float and double, via operators.
2) Elementary function calls, namely
those made from
Hello A.Z.
As Raffaello said, Java arithmetic does not have any more problem than
C/C++ when using IEEE 754. The "proof" of contrary is only an illusion
due to the rounding behavior of C/C++ output routines, as demonstrated
by Raffaello's code. Maybe some C/C++ code use Intel extended
Sorry, for some reason a line was missing in the C++ code
#include
using namespace std;
int main()
{
cout << "Program has started..." << endl;
double a = 0.1D;
double b = 0.1D;
double c = a*b;
double d = 0.01D;
cout << endl << "0.1D*0.1D " << (c == d ? "==" : "!=") <<
Hi,
Java, as well as most implementations of most languages, including C and
C++, have adopted the IEEE 754 floating-point standard, first issued in
1985. The standard specifies the formats, the outcome of operators and
comparisons up to the last bit.
Try out this C/C++ code (I'm on Linux
To core-libs-dev@openjdk.java.net,
In terms of floating point, it seems there are thus
three (3) phenomena that are relevant.
1) Arithmetic on float and double, via operators.
2) Elementary function calls, namely
those made from java.lang.StrictMath, as it is,
on double values.
3)
