Open System Services Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

OSS Library Calls (a - d) cacosf(3)
NAME
cacosf - Computes the float 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>
float complex cacosf(
float complex z);
PARAMETERS
z Specifies a float complex value.
DESCRIPTION
The cacosf( ) function is a float complex version of the cacos() function; it takes a float complex
argument and returns a float complex result.
The cacosf( ) 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 cacosf( ) function returns the 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), cacosl(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.
527187-017 Hewlett-Packard Company 1−65