X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmisc.cc;h=856f34038e433a5c5d98c8453d17bc79182169a2;hb=e8b9253c5405efaf70cdc473d80eb9764ebc0149;hp=c64983d8642fd224cdd32392ec719e9281c384c5;hpb=a276a19dc6bd57832db3107f2f2cbb04cb4677b6;p=lilypond.git

diff --git a/lily/misc.cc b/lily/misc.cc
index c64983d864..856f34038e 100644
--- a/lily/misc.cc
+++ b/lily/misc.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
@@ -53,9 +53,17 @@ peak_around (Real epsilon,  Real threshold, Real x)
 {
   if (x < 0)
     return 1.0;
-  return max (- epsilon * (x - threshold) / ((x + epsilon)  * threshold), 0.0);
+  return max (- epsilon * (x - threshold) / ((x + epsilon) * threshold), 0.0);
 }
 
+/*
+  0 at 0,  1 at standard_x, and increasing thereafter. 
+ */
+Real
+convex_amplifier (Real standard_x, Real increase_factor, Real x)
+{
+  return (exp (increase_factor * x / standard_x) - 1.0) / (exp (increase_factor) - 1.0); 
+}
 
 string
 camel_case_to_lisp_identifier (string in)
@@ -63,17 +71,17 @@ camel_case_to_lisp_identifier (string in)
   vector<char> out;
   
   /* don't add '-' before first character */
-  out.push_back (tolower (in[0]));
+  out.push_back (char (tolower (in[0])));
     
   for (size_t inpos = 1; inpos < in.size (); inpos++)
     {
       if (isupper (in[inpos]))
 	out.push_back ('-');
-      out.push_back (tolower (in[inpos]));
+      out.push_back ( char(tolower (in[inpos])));
     }
   
   string result (&out[0], out.size ());
-  replace_all (result, '_', '-');
+  replace_all (&result, '_', '-');
 
   return result;
 }