File: rnfail017.hs

package info (click to toggle)
ghc-cvs 20040725-2
  • links: PTS
  • area: main
  • in suites: sarge
  • size: 68,484 kB
  • ctags: 19,658
  • sloc: haskell: 251,945; ansic: 109,709; asm: 24,961; sh: 12,825; perl: 5,786; makefile: 5,334; xml: 3,884; python: 682; yacc: 650; lisp: 477; cpp: 337; ml: 76; fortran: 24; csh: 18
file content (17 lines) | stat: -rw-r--r-- 309 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
module ShouldFail where

-- !!! Precedence of unary negation

f1 x y = x + -y 	-- Fails
f2 x y = x * -y		-- Fails


f3 x y = -x + y		-- OK: means  (-x) + y
			-- since - is left associative

f4 x y = - x*y		-- OK: means -(x*y)
			-- since - binds less tightly than *

f5 x y = x >= -y	-- OK means x >= (-y)