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cosf(3)

NAME

     cos, cosf -- cosine functions

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     double
     cos(double x);

     float
     cosf(float x);

DESCRIPTION

     The cos() and the cosf() functions compute the cosine of x (measured in
     radians).	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() and the cosf() functions return 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 ISO/IEC 9899:1990 (``ISO C90'').

FreeBSD 5.4			  May 2, 1991			   FreeBSD 5.4

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