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glsl: fix atan(0, -1)

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Fixes fd.o bug 29388

NOTE: this is a candidate for the 7.8 branch.
This commit is contained in:
Brian Paul 2010-08-05 16:38:22 -06:00
parent 918ef7ff18
commit 3d038a3ed2
1 changed files with 1 additions and 1 deletions
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2
src/mesa/slang/library/slang_common_builtin.gc
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@ -411,7 +411,7 @@ float atan(const float y, const float x)
if (abs(x) > 1.0e-4) {
r = atan(y / x);
if (x < 0.0) {
r = r + sign(y) * 3.141593;
r = r + 3.141593 - 6.283186 * float(y < 0.0);
}
}
else {