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CASIN(3) Library Functions Manual CASIN(3)NAMEcasin,casinf,casinl-- complex arc sine functionsSYNOPSIS#include<complex.h>double complexcasin(double complex z); float complexcasinf(float complex z); long double complexcasinl(long double complex z);DESCRIPTIONThese functions compute the complex arc sine of z, with branch cuts outside the interval [-1, +1] along the real axis.RETURNVALUESThese functions return the complex arc sine value, in the range of a strip mathematically unbounded along the imaginary axis and in the interval [-pi/2, +pi/2] along the real axis.ERRORSNo errors are defined.SEEALSOcsin(3), IEEE Std 1003.1-2001 (``POSIX.1'') <complex.h>COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . NetBSD 7.1.2 January 29, 2013 NetBSD 7.1.2