1COS(3) 386BSD Programmer's Manual COS(3) 2 3NNAAMMEE 4 ccooss - cosine function 5 6SSYYNNOOPPSSIISS 7 ##iinncclluuddee <<mmaatthh..hh>> 8 9 _d_o_u_b_l_e 10 ccooss(_d_o_u_b_l_e _x) 11 12DDEESSCCRRIIPPTTIIOONN 13 The ccooss() function computes the cosine of _x (measured in radians). A 14 large magnitude argument may yield a result with little or no 15 significance. For a discussion of error due to roundoff, see math(3). 16 17RREETTUURRNN VVAALLUUEESS 18 The ccooss() function returns the cosine value. 19 20SSEEEE AALLSSOO 21 sin(3), tan(3), asin(3), acos(3), atan(3), atan2(3), sinh(3), 22 cosh(3), tanh(3), math(3), 23 24SSTTAANNDDAARRDDSS 25 The aaccooss() function conforms to ANSI C3.159-1989 (``ANSI C''). 26 27BSD Experimental May 2, 1991 1 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67