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

6       csqrt, csqrtf, csqrtl - complex square root
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SYNOPSIS

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

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

24       These functions first appeared in glibc in version 2.1.
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ATTRIBUTES

27       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
28       tributes(7).
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30       ┌────────────────────────────────────────────┬───────────────┬─────────┐
31       │Interface                                   │ Attribute     │ Value   │
32       ├────────────────────────────────────────────┼───────────────┼─────────┤
33       │csqrt(), csqrtf(), csqrtl()                 │ Thread safety │ MT-Safe │
34       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

37       C99, POSIX.1-2001, POSIX.1-2008.
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SEE ALSO

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

43       This  page  is  part of release 5.12 of the Linux man-pages project.  A
44       description of the project, information about reporting bugs,  and  the
45       latest     version     of     this    page,    can    be    found    at
46       https://www.kernel.org/doc/man-pages/.
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50                                  2021-03-22                          CSQRT(3)
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