• Tom Lane's avatar
    New method for preventing compile-time calculation of degree constants. · 6b1a213b
    Tom Lane authored
    Commit 65abaab5 tried to prevent the scaling constants used in
    the degree-based trig functions from being precomputed at compile time,
    because some compilers do that with functions that don't yield results
    identical-to-the-last-bit to what you get at runtime.  A report from
    Peter Eisentraut suggests that some recent compilers are smart enough
    to see through that trick, though.  Instead, let's put the inputs to
    these calculations into non-const global variables, which should be a
    more reliable way of convincing the compiler that it can't assume that
    they are compile-time constants.  (If we really get desperate, we could
    mark these variables "volatile", but I do not believe we should have to.)
    6b1a213b
float.c 79.3 KB