creal(3) — Справочная страница Linux

creal(3)                Library Functions Manual                creal(3)

ИМЯ

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

БИБЛИОТЕКА

       Math library (libm, -lm)

СИНТАКСИС

       #include <complex.h>

       double creal(double complex z);
       float crealf(float complex z);
       long double creall(long double complex z);

ОПИСАНИЕ

       These functions return the real part of the complex number z.

       One has:

           z = creal(z) + I * cimag(z)

АТРИБУТЫ

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ creal(), crealf(), creall()         │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

ВЕРСИИ

       GCC supports also __real__.  That is a GNU extension.

СТАНДАРТЫ

       C11, POSIX.1-2008.

ИСТОРИЯ

       glibc 2.1.  C99, POSIX.1-2001.

СМОТРИТЕ ТАКЖЕ

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

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2024-06-26.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                       creal(3)

Страницы, которые ссылаются на эту страницу: cimag(3), complex(7)