mojave man page for cacos

Query: cacos

OS: mojave

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

CACOS(3)						   BSD Library Functions Manual 						  CACOS(3)

NAME
cacos -- complex inverse cosine function
SYNOPSIS
double complex cacos(double complex z); long double complex cacosl(long double complex z); float complex cacosf(float complex z);
DESCRIPTION
cacos(z) computes the inverse cosine of the complex floating-point number z, with branch cuts outside the interval [-1,1] along the real axis. cacos() returns values in a strip of the complex plane with unbounded imaginary part, and real part in the interval [0, Pi]. For all complex floating point numbers z, cacos(conj(z)) = conj(cacos(z)).
SPECIAL VALUES
The conjugate symmetry of cacos() is used to abbreviate the specification of special values. cacos(+-0 + 0i) returns Pi/2 - 0i. cacos(+-0 + NaN i) returns Pi/2 + NaN i. cacos(x + inf i) returns Pi/2 - inf i, for finite x. cacos(x + NaN i) returns NaN + NaN i, for finite nonzero x. cacos(-inf + yi) returns Pi - inf i, for finite positive-signed y. cacos(inf + yi) returns 0 - inf i, for finite positive-signed y. cacos(-inf + inf i) returns 3Pi/4 - inf i. cacos(inf + inf i) returns Pi/4 - inf i. cacos(+-inf + NaN i) returns NaN + inf i. cacos(NaN + yi) returns NaN + NaN i, for finite y. cacos(NaN + inf i) returns NaN - inf i. cacos(NaN + NaN i) returns NaN + NaN i.
NOTES
SEE ALSO
complex(3)
STANDARDS
The cacos() function conforms to ISO/IEC 9899:2011. 4th Berkeley Distribution December 11, 2006 4th Berkeley Distribution
Related Man Pages
cacoshf(3) - mojave
clogl(3) - mojave
cacosh(3) - osx
cacoshf(3) - osx
cacoshl(3) - osx
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