log function

[Richard van de Stadt]

I get the error message
log: SING error

when the statement 

store_control_parameter (mean / log (1/get_acceptance_ratio_X0()))

is executed.

Does anybody know what the error message means?

The same message appears when I split up the statement:
tolog = 1/get_acceptance_ratio_X0();   /* tolog has then value 1.25 */
loggie = log (tolog);  /* now this is the statement that causes the message */
store_control_parameter (mean / loggie);

Richard.

-- 
R.R. van de Stadt (Richard)
Email: stadt at cs.utwente.nl