.TH TAN 3F .SH NAME tan, dtan \- Fortran tangent intrinsic function .SH SYNOPSIS .nf .B "real r1, r2" .B "double precision dp1, dp2" .P .B "r2 = tan(r1)" .P .B "dp2 = dtan(dp1)" .B "dp2 = tan(dp1)" .SH DESCRIPTION .I Tan\^ returns the real tangent of its real argument. .I Dtan\^ returns the double-precision tangent of its double-precision argument. The generic .I tan\^ function becomes .I dtan\^ as required with a double-precision argument. .SH SEE ALSO trig(3M). .\" @(#)tan.3f 5.2 of 5/18/82