1; SketchyLISP Library 2; Copyright (C) 2005,2006,2007 Nils M Holm. All rights reserved. 3; See the file LICENSE of the SketchyLISP distribution 4; for conditions of use. 5 6; ---name--- 7; not 8 9; ---conformance--- 10; R5RS 11 12; ---purpose--- 13; Logical negation. 14 15; ---args--- 16; A - truth value 17 18; ---keywords--- 19; NOT function, NOT, logical negation, logical NOT 20 21; ---see-also--- 22; neq? 23 24; ---example--- 25; (not #f) => #t 26 27(define not #t) 28 29; ---code--- 30(define (not a) 31 (eq? a #f)) 32