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casinf, casin, casinl

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< c‎ | numeric‎ | complex
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Defined in header <complex.h>
float complex       casinf( float complex z );
(since C99)
double complex      casin( double complex z );
(since C99)
long double complex casinl( long double complex z );
(since C99)

Computes the complex arc sine of z with branch cuts outside the interval [−1,+1] along the real axis.

Contents

[edit] Parameters

z - complex argument

[edit] Return value

The complex arc sine of z in the interval (−∞; ∞) along the imaginary axis and in the interval [−π/2; +π/2] along the real axis.

[edit] Example

#include <stdio.h>
#include <complex.h>
 
int main(void)
{
    double complex z;
 
    z = csin(1.0+2.0*I);
    printf("csin(1.0+2.0i)            ==> %f%+fi\n", creal(z),cimag(z));
 
    z = casin(3.165779+1.959601*I);
    printf("casin(3.165779+1.959601i) ==> %f%+fi\n", creal(z),cimag(z));
 
    return 0;
}

Output:

csin(1.0+2.0i)            ==> 3.165779+1.959601i
casin(3.165779+1.959601i) ==> 1.000000+2.000000i

[edit] See also

(C99)(C99)(C99)
computes the complex arc cosine
(function) [edit]
(C99)(C99)(C99)
computes the complex arc tangent
(function) [edit]
(C99)(C99)(C99)
computes the complex sine
(function) [edit]
(C99)(C99)
computes arc sine (arcsin(x))
(function) [edit]