CASIN
Section: complex math routines (3)
Updated: 2002-07-28
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NAME
casin, casinf, casinl - complex arc sine
SYNOPSIS
#include <complex.h>
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
Link with -lm.
DESCRIPTION
The casin() function calculates the complex asin().
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)).
CONFORMING TO
C99
SEE ALSO
ccos(3),
clog(3),
complex(5)
Index
- NAME
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- SYNOPSIS
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- DESCRIPTION
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- CONFORMING TO
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- SEE ALSO
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