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#redirect [[C mathematical functions#complex.h]]
Note: any examples assume the use of the GNU g++ compiler.
==Overview==
'''complex.h''' - a part of the C++ standard library which provides functionality for complex arithmetic. So, if you want to enable support for complex arithmetic, add the following line to the top of your C++ program:<Br>
#include <complex>
==Function Declarations==
The header '''complex.h''' defines the following functions:
double cabs(double complex);
float cabsf(float complex);
long double cabsl(long double complex);
double complex cacos(double complex);
float complex cacosf(float complex);
double complex cacosh(double complex);
float complex cacoshf(float complex);
long double complex cacoshl(long double complex);
long double complex cacosl(long double complex);
double carg(double complex);
float cargf(float complex);
long double cargl(long double complex);
double complex casin(double complex);
float complex casinf(float complex);
double complex casinh(double complex);
float complex casinhf(float complex);
long double complex casinhl(long double complex);
long double complex casinl(long double complex);
double complex catan(double complex);
float complex catanf(float complex);
double complex catanh(double complex);
float complex catanhf(float complex);
long double complex catanhl(long double complex);
long double complex catanl(long double complex);
double complex ccos(double complex);
float complex ccosf(float complex);
double complex ccosh(double complex);
float complex ccoshf(float complex);
long double complex ccoshl(long double complex);
long double complex ccosl(long double complex);
double complex cexp(double complex);
float complex cexpf(float complex);
long double complex cexpl(long double complex);
double cimag(double complex);
float cimagf(float complex);
long double cimagl(long double complex);
double complex clog(double complex);
float complex clogf(float complex);
long double complex clogl(long double complex);
double complex conj(double complex);
float complex conjf(float complex);
long double complex conjl(long double complex);
double complex cpow(double complex, double complex);
float complex cpowf(float complex, float complex);
long double complex cpowl(long double complex, long double complex);
double complex cproj(double complex);
float complex cprojf(float complex);
long double complex cprojl(long double complex);
double creal(double complex);
float crealf(float complex);
long double creall(long double complex);
double complex csin(double complex);
float complex csinf(float complex);
double complex csinh(double complex);
float complex csinhf(float complex);
long double complex csinhl(long double complex);
long double complex csinl(long double complex);
double complex csqrt(double complex);
float complex csqrtf(float complex);
long double complex csqrtl(long double complex);
double complex ctan(double complex);
float complex ctanf(float complex);
double complex ctanh(double complex);
float complex ctanhf(float complex);
long double complex ctanhl(long double complex);
long double complex ctanl(long double complex);
==Notes==
#<big>'''Values are represented in radians.'''</big>
==Example Code==
===Initializing a Complex Number object===
complex a(1,0);
complex b(0,1);
===Prompting the user for a complex number===
cout << "Enter a complex value\n";
cin >> a;
==REFERENCE==
*The Original Open Group standards from which this table is derived can be found at [http://www.open-group.org/unix/online.html http://www.open-group.org/unix/online.html]
*See also [http://www.opengroup.org/onlinepubs/009695399/basedefs/complex.h.html http://www.opengroup.org/onlinepubs/009695399/basedefs/complex.h.html]
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