Guardian Native C Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

Guardian Native C Library Calls (a - e) cacosl(3)
NAME
cacosl - Computes the long double complex arc cosine
LIBRARY
H-series and J-series native Guardian processes: $SYSTEM.ZDLLnnn.ZCREDLL
32-bit H-series and J-series OSS processes: /G/system/zdllnnn/zcredll
64-bit H-series and J-series OSS processes: /G/system/zdllnnn/ycredll
SYNOPSIS
#include <complex.h>
long double complex cacosl(
long double complex z);
PARAMETERS
z Specifies a long double complex value.
DESCRIPTION
The cacosl() function is a long double complex version of the cacos() function; it takes a long
double complex argument and returns a long double complex result.
The cacosl() function computes the complex arc cosine of z, in the range of a strip mathemati-
cally unbounded along the imaginary axis and in the interval [0, π] along the real axis.
Branch cuts are outside the interval [-1, +1] along the real axis.
NOTES
This function is implemented only for the IEEE_float floating-point option. Applications using
this function cannot be compiled if the specified floating-point option is Tandem_float.
RETURN VALUES
The cacosl() function returns complex arc cosine of z, in the range of a strip mathematically
unbounded along the imaginary axis and in the interval [0, π] along the real axis.
ERRORS
No errors are defined.
RELATED INFORMATION
Functions: acos(3), cacos(3), cacosf(3), ccos(3).
STANDARDS CONFORMANCE
This function conforms to the ISO/IEC 9899:1999 standard.
This function conforms to the IEEE Std 1003.1, 2004 Edition.
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