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SunOS 5.10 - man page for cacosf (sunos section 3m)

cacos(3M)																 cacos(3M)

cacos, cacosf, cacosl - complex arc cosine functions
cc [ flag... ] file... -lm [ library... ] #include <complex.h> double complex cacos(double complex z); float complex cacosf(float complex z); long double complex cacosl(long double complex z); These functions compute the complex arc cosine of z, with branch cuts outside the interval [ -1, +1 ] along the real axis. These functions return the complex arc cosine value, in the range of a strip mathematically unbounded along the imaginary axis and in the interval [ 0, pi ] along the real axis. No errors are defined. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ ccos(3M), complex.h(3HEAD), attributes(5), standards(5) 1 Sep 2002 cacos(3M)