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Manual Section... (3) - page: casinl
NAME
casin, casinf, casinl - complex arc sineSYNOPSIS
#include <complex.h>
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
DESCRIPTION
The casin() function calculates 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))
VERSIONS
These functions first appeared in glibc in version 2.1.CONFORMING TO
C99.SEE ALSO
ccos(3), clog(3), complex(7)COLOPHON
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Time: 15:26:44 GMT, June 11, 2010