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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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casin(3) Library Functions Manual casin(3)
casin, casinf, casinl - complex arc sine
Math library (libm, -lm)
#include <complex.h>
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
These functions calculate the complex arc sine of z. If
y = casin(z), then z = csin(y). The real part of y is chosen in
the interval [-pi/2,pi/2].
One has:
casin(z) = -i clog(iz + csqrt(1 - z * z))
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ casin(), casinf(), casinl() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
glibc 2.1. C99, POSIX.1-2001.
clog(3), csin(3), complex(7)
This page is part of the man-pages (Linux kernel and C library
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Linux man-pages 6.9.1 2024-05-02 casin(3)
Pages that refer to this page: asin(3), csin(3), complex(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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