X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fc%2B%2B.scm;h=48f54d3582b77fb6a426803b55022c2da33de424;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=8f4986a257ba72fe1ef0cefba10f792062cb2c6f;hpb=44dd3acc534e7a534f846810b481c3f603eaa92e;p=lilypond.git

diff --git a/scm/c++.scm b/scm/c++.scm
index 8f4986a257..48f54d3582 100644
--- a/scm/c++.scm
+++ b/scm/c++.scm
@@ -1,6 +1,6 @@
 ;;;; This file is part of LilyPond, the GNU music typesetter.
 ;;;;
-;;;; Copyright (C) 1998--2012 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;;;                 Han-Wen Nienhuys <hanwen@xs4all.nl>
 ;;;;
 ;;;; LilyPond is free software: you can redistribute it and/or modify
@@ -25,10 +25,19 @@
   (and (pair? x)
        (number? (car x)) (number? (cdr x))))
 
+(define-public (number-pair-list? x)
+  (and (list? x)
+       (every number-pair? x)))
+
 (define-public (fraction? x)
   (and (pair? x)
        (index? (car x)) (index? (cdr x))))
 
+(define-public (rational-or-procedure? x)
+  (or
+   (and (rational? x) (exact? x))
+   (procedure? x)))
+
 (define-public (number-or-grob? x)
   (or (ly:grob? x) (number? x)))