Float problems with trunc() and round()

[Kjeld Borch Egevang]

I discovered what I assume to be a problem.

I suppose the functions trunc() and round() should do something similar to
ceil() and floor().

When I try this on my i686-linux, it seems to be broken. Here is my test:

#include <math.h>

int main()
{
    float x;

    x = 4.0/3;
    printf("%e %e %e %e %e\n", x, floor(x), ceil(x), trunc(x), round(x));
}

it prints out:

1.333333e+00 1.000000e+00 2.000000e+00 1.112537e-308 -1.997559e+00

I use glibc-2.2-9 but the same problem exists in glibc-2.2.4.


/Kjeld

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