casinf, casin, casinl

 

C

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Complex number arithmetic

Types and the imaginary constant
complex Complex_I CMPLX	imaginary Imaginary_I I
Manipulation
cimag creal carg	conj cproj
Power and exponential functions
cexp clog	cpow csqrt
Trigonometric functions
ccos csin ctan	cacos casin catan
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ccosh csinh ctanh	cacosh casinh catanh

 

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.

Parameters

z

-

complex argument

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.

Example

Run this code

#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

See also

cacoscacosfcacosl (C99)(C99)(C99)	computes the complex arc cosine (function)
catancatanfcatanl (C99)(C99)(C99)	computes the complex arc tangent (function)
csincsinfcsinl (C99)(C99)(C99)	computes the complex sine (function)
asinasinfasinl (C99)(C99)	computes arc sine (arcsin(x)) (function)
C++ documentation for asin