To | ng-spice-devel@ieee.ing.uniroma1.it |
From | "GLAO S. Dezai" <dezai@hotbot.com> |
Date | Tue, 28 Mar 2000 05:21:19 -0800 |
Delivered-To | mailing list ng-spice-devel@ieee.ing.uniroma1.it |
Mailing-List | contact ng-spice-devel-help@ieee.ing.uniroma1.it; run by ezmlm |
Organization | HotBot Mail (http://mail.hotbot.com:80) |
Reply-To | ng-spice-devel@ieee.ing.uniroma1.it |
A small error has been forgotten in my previous patches. The arguments of ln and log must be strictly positive and the argument of sqrt positive or null. *****original routines ***** double PTln(arg) double arg; { -- if (arg < 0.0) -- arg = -arg; return (log(arg)); } double PTlog(arg) double arg; { -- if (arg < 0.0) -- arg = -arg; return (log10(arg)); } double PTsqrt(arg) double arg; { if (arg < 0.0) -- arg = -arg; return (sqrt(arg)); } ***************************** ***** My patches ***** double PTln(arg) double arg; { ++ if (arg <= 0.0) ++ return (SHUGE); return (log(arg)); } double PTlog(arg) double arg; { ++ if (arg <= 0.0) ++ return (SHUGE); return (log10(arg)); } double PTsqrt(arg) double arg; { if (arg < 0.0) ++ return (HUGE); return (sqrt(arg)); } ***************************** Dezai. HotBot - Search smarter. http://www.hotbot.com