creal, crealf, creall - complex real functions
double creal(double complex z);
float crealf(float complex z);
long double creall(long double complex z);
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard.
These functions shall compute the real part of z.
These functions shall return the real part value.
No errors are defined.
For a variable z of type complex:z == creal(z) + cimag(z)*I
carg() , cimag() , conj() , cproj() , the Base Definitions volume of IEEE Std 1003.1-2001, <complex.h>
First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.