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MathUtil: Remove IsNAN and IsINF
These aren't necessary, since the stdlib provides equivalents.
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@ -56,19 +56,6 @@ union IntFloat {
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explicit IntFloat(float _f) : f(_f) {}
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};
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inline bool IsINF(double d)
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{
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IntDouble x(d);
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return (x.i & ~DOUBLE_SIGN) == DOUBLE_EXP;
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}
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inline bool IsNAN(double d)
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{
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IntDouble x(d);
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return ((x.i & DOUBLE_EXP) == DOUBLE_EXP) &&
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((x.i & DOUBLE_FRAC) != DOUBLE_ZERO);
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}
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inline bool IsQNAN(double d)
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{
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IntDouble x(d);
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