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util: Add inline function for approximate floating point comparison.

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This commit is contained in:
José Fonseca 2010-05-27 16:16:11 +01:00
parent f503b3dd9d
commit b57e18c35c
1 changed files with 9 additions and 0 deletions
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9
src/gallium/auxiliary/util/u_math.h
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@ -335,6 +335,15 @@ util_iround(float f)
}
/**
* Approximate floating point comparison
*/
static INLINE boolean
util_is_approx(float a, float b, float tol)
{
return fabs(b - a) <= tol;
}
/**
* Test if x is NaN or +/- infinity.