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Slightly relax std.internal.math.gammafunction unittest for 64-bit reals

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Using LDC master on Win64, I get a relative diff of 1.068e-15 for the
second tuple (input = 1/8), exceeding the allowed upper bound by not even
7%. I chose to be generous and doubled the limit. ;)

More details for the 2nd tuple:
actual:   0x1.0a333fd8b6880p+2
expected: 0x1.0a333fd8b687bp+2
rel diff: 1.067682e-15

The other 4 tuples are perfect matches.
This commit is contained in:
Martin 2015-11-08 15:27:34 +01:00
parent 2812f9a676
commit a3035d7d77
1 changed files with 1 additions and 1 deletions
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2
std/internal/math/gammafunction.d
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@ -1662,7 +1662,7 @@ unittest {
tuple(1017.644138623741168814449776695062817947092468536L, 1.0L/1024),
];
foreach (test; testData)
assert(approxEqual(logmdigammaInverse(test[0]), test[1], 1e-15, 0));
assert(approxEqual(logmdigammaInverse(test[0]), test[1], 2e-15, 0));
assert(approxEqual(logmdigamma(logmdigammaInverse(1)), 1, 1e-15, 0));
assert(approxEqual(logmdigamma(logmdigammaInverse(real.min_normal)), real.min_normal, 1e-15, 0));