ACOS(3) BSD Programmer's Manual ACOS(3)
acos, acosf - arc cosine function
#include <math.h> double acos(double x); float acosf(float x);
The acos() and acosf() functions compute the principal value of the arc cosine of x in the range [0, pi].
If |x|>1, acos(x) and acosf(x) set the global variable errno to EDOM.
asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3)
The acos() function conforms to ANSI X3.159-1989 ("ANSI C"). MirOS BSD #10-current May 2, 1991 1
Generated on 2014-07-04 21:17:45 by $MirOS: src/scripts/roff2htm,v 1.79 2014/02/10 00:36:11 tg Exp $
These manual pages and other documentation are copyrighted by their respective writers;
their source is available at our CVSweb,
AnonCVS, and other mirrors. The rest is Copyright © 2002‒2014 The MirOS Project, Germany.
This product includes material provided by Thorsten Glaser.
This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report – diffs preferred.