Originální popis anglicky:
creal, crealf, creall - complex real functions
Návod, kniha: POSIX Programmer's Manual
#include <complex.h>
double creal(double complex
z);
float crealf(float complex
z);
long double creall(long double complex
z);
These functions shall compute the real part of
z.
These functions shall return the real part value.
No errors are defined.
The following sections are informative.
None.
For a variable
z of type
complex:
z == creal(z) + cimag(z)*I
None.
None.
carg() ,
cimag() ,
conj() ,
cproj() , the Base
Definitions volume of IEEE Std 1003.1-2001,
<complex.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
