cacos(3M)cacos(3M)NAMEcacos(), cacosf(), cacosl(), cacosw(), cacosq() - complex arccosine
functions
SYNOPSISDESCRIPTION
These functions are available only for Integrity servers.
returns the complex arccosine of z, in the range of a strip mathemati‐
cally unbounded along the imaginary axis and in the interval [0,Pi]
along the real axis.
Branch cuts are outside the interval [-1,+1] along the real axis.
is a version of it takes a argument and returns a result.
is a it takes a argument and returns a result.
is an version of it takes an argument and returns an result.
is equivalent to on HP-UX systems.
USAGE
To use these functions, compile with the default option. To use com‐
pile with the option. Make sure your program includes and link in the
math library by specifying on the compiler or linker command line.
RETURN VALUE
=
returns Pi/2-i0.
returns Pi/2+iNaN.
returns Pi/2-iInf, for finite x.
returns NaN+iNaN and optionally raises the invalid floating-point
exception, for nonzero finite x.
returns Pi-iInf, for positive-signed finite y.
returns +0-iInf, for positive-signed finite y.
returns 3Pi/4-iInf.
returns Pi/4-iInf.
(where the sign of the imaginary part of the result is unspecified).
returns NaN+iNaN and optionally raises the invalid floating-point
exception, for finite y.
returns NaN-iInf.
returns NaN+iNaN.
ERRORS
No errors are defined.
SEE ALSOacos(3M), ccos(3M), complex(5).
STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex G, ``IEC 60559-compatible complex arith‐
metic'')
HP Integrity Server Only cacos(3M)