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Command: cacos | Section: 3 | Source: OpenBSD | File: cacos.3
CACOS(3) FreeBSD Library Functions Manual CACOS(3)
NAME
cacos, cacosf, cacosl - complex circular arc cosine
SYNOPSIS
#include <complex.h>
double complex
cacos(double complex z);
float complex
cacosf(float complex z);
long double complex
cacosl(long double complex z);
DESCRIPTION
The cacos(), cacosf() and cacosl() functions compute the complex circular
arc cosine of z.
For all complex floating-point numbers z,
cacos(z) = Pi/2 - casin(z).
RETURN VALUES
The cacos(), cacosf() and cacosl() functions return the complex circular
arc cosine of z with unbounded imaginary part, and real part in the
interval [0, Pi].
SEE ALSO
casin(3), catan(3)
STANDARDS
The cacos(), cacosf() and cacosl() functions conform to ISO/IEC 9899:1999
("ISO C99").
FreeBSD 14.1-RELEASE-p8 June 5, 2013 FreeBSD 14.1-RELEASE-p8