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   csqrt    ( 3 )

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Имя (Name)

csqrt, csqrtf, csqrtl - complex square root

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Синопсис (Synopsis)

#include <complex.h>

       double complex csqrt(double complex z);
       float complex csqrtf(float complex z);
       long double complex csqrtl(long double complex z);

       Link with -lm.

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Описание (Description)

These functions calculate the complex square root of z, with a
       branch cut along the negative real axis.  (That means that
       csqrt(-1+eps*I) will be close to I while csqrt(-1-eps*I) will be
       close to -I, if eps is a small positive real number.)

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Версии (Versions)

These functions first appeared in glibc in version 2.1.

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Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │csqrt(), csqrtf(), csqrtl()           │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

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Стандарты (Conforming to)

C99, POSIX.1-2001, POSIX.1-2008.

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Смотри также (See also)

cabs(3), cexp(3), complex(7)

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