1CREAL(3)                   Linux Programmer's Manual                  CREAL(3)
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NAME

6       creal, crealf, creall - get real part of a complex number
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SYNOPSIS

9       #include <complex.h>
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11       double creal(double complex z);
12       float crealf(float complex z);
13       long double creall(long double complex z);
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15       Link with -lm.
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DESCRIPTION

18       The creal() function returns the real part of the complex number z.
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20       One has:
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22           z = creal(z) + I * cimag(z)
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VERSIONS

25       These functions first appeared in glibc in version 2.1.
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CONFORMING TO

28       C99.
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NOTES

31       The gcc supports also __real__.  That is a GNU extension.
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SEE ALSO

34       cabs(3), cimag(3), complex(7)
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COLOPHON

37       This  page  is  part of release 3.25 of the Linux man-pages project.  A
38       description of the project, and information about reporting  bugs,  can
39       be found at http://www.kernel.org/doc/man-pages/.
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43                                  2008-08-11                          CREAL(3)
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