--- gforth/test/gforth.fs 2006/12/31 13:39:20 1.12 +++ gforth/test/gforth.fs 2007/12/31 17:34:59 1.14 @@ -1,6 +1,6 @@ \ test some gforth extension words -\ Copyright (C) 2003,2004,2005,2006 Free Software Foundation, Inc. +\ Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc. \ This file is part of Gforth. @@ -44,8 +44,47 @@ decimal { 'A -> 65 } { 1. '1 -> 1. 49 } -\ represent has no trailing 0s even for inf and nan +\ REPRESENT has no trailing 0s even for inf and nan { 1e 0e f/ pad 16 represent drop 2drop pad 15 + c@ '0 = -> false } { 0e 0e f/ pad 16 represent drop 2drop pad 15 + c@ '0 = -> false } { -1e 0e f/ pad 16 represent drop 2drop pad 15 + c@ '0 = -> false } + +\ TRY and friends + +: 0<-throw ( n -- ) + 0< throw ; + +: try-test1 ( n1 -- n2 ) + try + dup 0<-throw + iferror + 2drop 25 + then + 1+ + endtry ; + +{ -5 try-test1 -> 26 } +{ 5 try-test1 -> 6 } + +: try-test2 ( n1 -- n2 ) + try + 0 + restore + drop 1+ dup 0<-throw + endtry ; + +{ -5 try-test2 -> 0 } +{ 5 try-test2 -> 6 } + +: try-test3 ( n1 -- n2 ) + try + dup 0<-throw + endtry-iferror + 2drop 10 + else + 1+ + then ; + +{ -5 try-test3 -> 10 } +{ 5 try-test3 -> 6 }