Description

Small Model of Type : GAMS

Category : GAMS Test library

Main file : fnsigmo2.gms   includes :   fnset_x.inc [html]  fntest_x.inc [html]

$title 'Test correctness of sigmoid intrinsic' (FNSIGMO2,SEQ=193)

$include fnset_x.inc

reps = 2e-14;
relToInput = 0;
set T / t1 * t5 /;

table data(T,V)
        x         f_               fx_                    fxx_
t1      0         0.5              .25                     0
t2      1  0.731058578630005     0.196611933241482     -0.0908577476729484
t3     -1  0.268941421369995     0.196611933241482      0.0908577476729484
t4    100         1              3.72007597602084e-044 -3.72007597602084e-044
t5   -100  3.72007597602084e-044 3.72007597602084e-044  3.72007597602084e-044

;


loop {T,
  data(T,  'f')    = sigmoid.value (data(T,'x'));
  data(T, 'fx')    = sigmoid.grad  (data(T,'x'));
  data(T,'fxx')    = sigmoid.hess  (data(T,'x'));
  data(T, 'rc')    = mathlastrc;
  data(T, 'ec')    = mathlastec;
};

$include fntest_x.inc

display data;