acosf man page on NetBSD

acosf man page on NetBSD

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ACOS(3)			 BSD Library Functions Manual		       ACOS(3)

NAME
     acos, acosf — arc cosine function

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     acos(double x);

     float
     acosf(float x);

DESCRIPTION
     The acos() and acosf() functions compute the principal value of the arc
     cosine of x in the range [0, π].

RETURN VALUES
     If |x|>1, acos(x) and acosf(x) set the global variable errno to EDOM.

SEE ALSO
     asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3),
     tan(3), tanh(3)

STANDARDS
     The acos() function conforms to ANSI X3.159-1989 (“ANSI C89”).

BSD				  May 2, 1991				   BSD

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