cpow


cpow

Raises a complex number to a complex power

 #include <complex.h> double complex cpow ( double complex x , double complex y  ); float complex cpowf ( float complex x , float complex y  ); long double complex cpowl ( long double complex x , long double complex y  ); 

The cpow( ) function raises its first complex argument x to the power of the second argument, y. In other words, it returns the value of xy.

The cpow( ) function has a branch cut along the negative real axis to yield a unique result.

Example

 double complex z = 0.0 + 2.7 * I; double complex w = 2.7 + 0.0 * I; double complex c = cpow(w, z);   // Raise e to the power of i*2.7 printf("%.2f %+.2f \xD7 I raised to the power of %.2f %+.2f \xD7 I "        "is %.2f %+.2f \xD7 I.\n",        creal(w), cimag(w), creal(z), cimag(z), creal(c), cimag(c)); 

This code produces the following output:

 2.70 +0.00 x I raised to the power of 0.00 +2.70 x I is -0.90 +0.44 x I. 

See Also

The corresponding function for real numbers, pow( ); the complex math functions cexp( ), clog( ), cpow( ), csqrt( )



C(c) In a Nutshell
C in a Nutshell (In a Nutshell (OReilly))
ISBN: 0596006977
EAN: 2147483647
Year: 2006
Pages: 473

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