[Syntax]
double pow(double x)
float powf(float x)
long double powl(long double x) [V2.01.00 or later]
[Description]
These functions calculate x raised to the power y.
[Special case]
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x<0 and y is a non-integer.
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NaN
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EDOM
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x<0, y==∞
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NaN
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EDOM
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x==±∞, y==0
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NaN
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EDOM
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x==0, y==0
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NaN
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EDOM
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x==0, y<0
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+HUGE_VAL
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ERANGE
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Overflow occurred
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±HUGE_VAL
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ERANGE
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Underflow occurred
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0
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ERANGE
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