CVS: strange test failures on FreeBSD - ideas sought

[David Relson]

Matthias,

As an experiment, I coded the function below to see what
fis_get_spamicity() would do with the 2 different P values.  With both
gsl and dcdflib, the output is "0.0000000000003129 0.0000000000003129
0.0000000000000000".  So, on Linux the difference in P values is
irrelevant.

static void test_prbf(void)
{
    FLOAT P, Q;
    size_t robn = 26;
    double s_l, s_f;

    /* LINUX */
    P.mant = 0.015336472898994948; P.exp =0;
    Q.mant = 3.7461709350412732e-61; Q.exp = 0;
    s_l = fis_get_spamicity(robn,P,Q);

    /* FREEBSD */
    robn = 26;
    P.mant = 0.015336472898994943; P.exp =0;
    Q.mant = 3.7461709350412753e-61; Q.exp = 0;
    s_f = fis_get_spamicity(robn,P,Q);

    printf( "%0.16f %0.16f %0.16f\n", s_l, s_f, s_l - s_f );
    exit(0);
}