Subject: Re: [dssslist] Arithmetic error From: <listen@xxxxxxxxxxxx> Date: Thu, 7 Apr 2005 17:42:02 +0200 |
> Do you know something about this? Could it be because of my version of Jade? This is a standard problem with IEEE 754 (aka floating point numbers). IEEE is binary and hence cannot store values like 0.1 in exect form. Same happens in almost every other language: #include <stdio.h> #include <stdlib.h> #include <math.h> int main( int args, char* argv[] ) { double a1 = atof(argv[1]); double a2 = atof(argv[2]); double a3 = atof(argv[3]); printf( "%lf - %lf - %lf = %lf < 0 ? %s\n", a1, a2, a3, a1-a2-a3, a1-a2-a3 <=0 ? "yes" : "no" ); return 0; }
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