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RocketLink!--> Man page versions: OpenBSD FreeBSD RedHat Others

ACOS(3)                   OpenBSD Programmer's Manual                  ACOS(3)

     acos, acosf - arc cosine functions

     #include <math.h>

     acos(double x);

     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) sets 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)

OpenBSD 2.6                       May 2, 1991                                1

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.

(Corrections, notes, and links courtesy of RocketAware.com)

[Detailed Topics]
FreeBSD Sources for acos(3) functions
FreeBSD Sources for acos(3) functions
OpenBSD sources for acos(3)

[Overview Topics]

Up to: Trigonometric - Trigonometric functions (sin, cos, tan, et al)

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