/*
- misc.hh -- declare miscellaneous functions.
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MISC_HH
#include <cstdlib>
using namespace std;
-#include "array.hh"
+#include "std-vector.hh"
#include "interval.hh"
double log_2 (double x);
-int intlog2 (int d);
+
+/*
+ Return the 2-log, rounded down
+*/
+template <class T>
+int
+intlog2 (T d)
+{
+ if (d <= 0)
+ error ("intlog2 with negative argument: " + ::to_string (d));
+ int i = 0;
+ while ((d != 1))
+ {
+ d /= 2;
+ i++;
+ }
+
+ assert (! (d / 2));
+ return i;
+}
inline int
sign (int i)
else return 0;
}
-Array<String> split_string (String s, char c);
+inline int
+shift_left (int value, int shiftamount)
+{
+ if (shiftamount < 0) return (value >> -shiftamount);
+ else return (value << shiftamount);
+}
inline Real
linear_interpolate (Real x, Real x1, Real x2, Real y1, Real y2)
{
return (x2 - x) / (x2 - x1) * y1
- + (x - x1) / (x2 - x1) * y2;
+ + (x - x1) / (x2 - x1) * y2;
+}
+
+inline Real
+normalize (Real x, Real x1, Real x2)
+{
+ return (x - x1) / (x2 - x1);
}
Real directed_round (Real f, Direction d);
+Real peak_around (Real epsilon, Real threshold, Real x);
+Real convex_amplifier (Real standard_x, Real increase_factor, Real x);
+string camel_case_to_lisp_identifier (const string &in);
+
#endif