lwrandom_uniform()

double lwrandom_uniform

(

void

)

Definition at line 94 of file lwrandom.c.

{
        double value;
        int32_t k;
        int32_t z;
        int32_t *s1 = &_lwrandom_seed[1];
        int32_t *s2 = &_lwrandom_seed[2];
 
        k = *s1 / 53668;
        *s1 = 40014 * (*s1 - k * 53668) - k * 12211;
        if (*s1 < 0)
                *s1 += 2147483563;
 
        k = *s2 / 52774;
        *s2 = 40692 * (*s2 - k * 52774) - k * 3791;
        if (*s2 < 0)
                *s2 += 2147483399;
 
        z = *s1 - *s2;
        if (z < 1)
                z += 2147483562;
 
        value = (double)(z) / 2147483563.0;
 
        return value;
}

References _lwrandom_seed, and genraster::value.

Referenced by lwgeom_solid_contains_lwgeom(), and lwpoly_to_points().

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