pow

Calculates x$(SUP y).

Special Values
x	y	pow(x, y)	div 0	invalid?
anything	±0.0	1.0	no	no
\|x\| > 1	+∞	+∞	no	no
\|x\| < 1	+∞	+0.0	no	no
\|x\| > 1	-∞	+0.0	no	no
\|x\| < 1	-∞	+∞	no	no
+∞	> 0.0	+∞	no	no
+∞	< 0.0	+0.0	no	no
-∞	odd integer > 0.0	-∞	no	no
-∞	> 0.0, not odd integer	+∞	no	no
-∞	odd integer < 0.0	-0.0	no	no
-∞	< 0.0, not odd integer	+0.0	no	no
±1.0	±∞	NaN	no	yes
< 0.0	finite, nonintegral	NaN	no	yes
±0.0	odd integer < 0.0	$(PLUSMNINF)	yes	no
±0.0	< 0.0, not odd integer	+∞	yes	no
±0.0	odd integer > 0.0	±0.0	no	no
±0.0	> 0.0, not odd integer	+0.0	no	no

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