COS(3)                    NetBSD Programmer's Manual                    COS(3)

NNAAMMEE
     ccooss - cosine function

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<mmaatthh..hh>>

     _d_o_u_b_l_e
     ccooss(_d_o_u_b_l_e _x);

     _f_l_o_a_t
     ccoossff(_f_l_o_a_t _x);

DDEESSCCRRIIPPTTIIOONN
     The ccooss() and ccoossff() 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).

RREETTUURRNN VVAALLUUEESS
     The ccooss() function returns the cosine value.

SSEEEE AALLSSOO
     sin(3),  tan(3),  asin(3),  acos(3),  atan(3),  atan2(3),  sinh(3),
     cosh(3),  tanh(3),  math(3)

SSTTAANNDDAARRDDSS
     The ccooss() function conforms to ANSI X3.159-1989 (``ANSI C'').

4.4BSD                            May 2, 1991                                1
