cos(3) - NetBSD Manual Pages

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COS(3)                  NetBSD Library Functions Manual                 COS(3)


NAME

     cos, cosf -- cosine function


LIBRARY

     Math Library (libm, -lm)


SYNOPSIS

     #include <math.h>

     double
     cos(double x);

     float
     cosf(float x);


DESCRIPTION

     The cos() and cosf() functions compute the cosine of x (measured in radi-
     ans).  A large magnitude argument may yield a result with little or no
     significance.  For a discussion of error due to roundoff, see math(3).


RETURN VALUES

     The cos() function returns the cosine value.


SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cosh(3), math(3), sin(3), sinh(3),
     tan(3), tanh(3)


STANDARDS

     The cos() function conforms to ANSI X3.159-1989 (``ANSI C89'').

NetBSD 4.0                        May 2, 1991                       NetBSD 4.0