C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
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pow, _powl
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <math.h>
 
  Syntax:    double pow( double x, double y );
             long double _powl( long double x, long double y );
 
  Returns:   <x> raised to the power of <y> if successful, or 0.0 or
             ±HUGE_VAL or ±_LHUGE_VAL if not.
 
  See also:  sqrt, exp, log, ldexp, frexp
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