1function C = sech (G) 2%SECH hyperbolic secant. 3% C = sech (G) is the hyperbolic secant of each entry of G. 4% Since sech(0) is nonzero, C is a full matrix. 5% 6% See also GrB/sec, GrB/asec, GrB/asech. 7 8% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved. 9% SPDX-License-Identifier: GPL-3.0-or-later 10 11G = G.opaque ; 12type = gbtype (G) ; 13if (~gb_isfloat (type)) 14 type = 'double' ; 15end 16 17C = GrB (gbapply ('minv', gbapply ('cosh', gbfull (G, type)))) ; 18 19