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csqrt
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
csqrt, csqrtf, csqrtl - complex square root
LIBRARY
Math library
( libm,~ -lm)
SYNOPSIS
#include <complex.h>
double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);
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.)
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
csqrt(),
csqrtf(),
csqrtl()
| Thread safety | M-Safe
|
STANDARDS
C11, POSIX.-2008.
HISTORY
glibc 2.1.
C99, POSIX.-2001.
SEE ALSO
cabs(3),
cexp(3),
complex(7)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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