flightgear/test_suite/attic/est-epsilon.cxx

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2022-10-20 20:29:11 +08:00
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#include <stdio.h>
#include <simgear/compiler.h>
#if defined( __APPLE__)
# include <OpenGL/OpenGL.h>
#else
# include <GL/gl.h>
#endif
int main() {
GLfloat a, t;
a = 1.0;
do {
printf("a = %.10f\n", a);
a = a / 2.0;
t = 1.0 + a;
} while ( t > 1.0 );
a = a + a;
printf("Estimated GLfloat epsilon = %.10f\n", a);
return(0);
}