GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.9(Squeeze) |
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cacos(3) |
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cacos, cacosf, cacosl − complex arc cosine
#include <complex.h>
double
complex cacos(double complex z);
float complex cacosf(float complex z);
long double complex cacosl(long double complex
z);
Link with −lm.
The cacos() function calculates the complex arc cosine of z. If y = cacos(z), then z = ccos(y). The real part of y is chosen in the interval [0,pi].
One has:
cacos(z) = −i clog(z + csqrt(z * z − 1))
These functions first appeared in glibc in version 2.1.
C99.
ccos(3), clog(3), complex(7)
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
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cacos(3) | |