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cproj
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
cproj, cprojf, cprojl - project into Riemann Sphere
LIBRARY
Math library
( libm,~ -lm)
SYNOPSIS
#include <complex.h>
double complex cproj(double complex z);
float complex cprojf(float complex z);
long double complex cprojl(long double complex z);
DESCRIPTION
These functions project a point in the plane onto the surface of a
Riemann Sphere, the on-point compactification of the complex plane.
Each finite point
z
projects to
z
itself.
Every complex infinite value is projected to a single infinite value,
namely to positive infinity on the real axis.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
cproj(),
cprojf(),
cprojl()
| Thread safety | M-Safe
|
STANDARDS
C11, POSIX.-2008.
HISTORY
glibc 2.1.
C99, POSIX.-2001.
In glibc 2.11 and earlier, the implementation does something different
(a
stereographic
projection onto a Riemann Sphere).
SEE ALSO
cabs(3),
complex(7)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
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