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fmax functions [V2.00.00 or later]
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[Syntax]
double fmax(double x, double y)
float fmaxf(float x, float y)
long double fmaxl(long double x, long double y) [V2.01.00 or later]
[Description]
These functions return the larger value among x and y. If either x or y is a NaN, the other value is returned.