X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpretor/preprocessor/faust-0.9.47mr3/compiler/signals/interval.hh diff --git a/interpretor/preprocessor/faust-0.9.47mr3/compiler/signals/interval.hh b/interpretor/preprocessor/faust-0.9.47mr3/compiler/signals/interval.hh deleted file mode 100644 index eb599f8..0000000 --- a/interpretor/preprocessor/faust-0.9.47mr3/compiler/signals/interval.hh +++ /dev/null @@ -1,228 +0,0 @@ -/************************************************************************ - ************************************************************************ - FAUST compiler - Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale - --------------------------------------------------------------------- - This program 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 2 of the License, or - (at your option) any later version. - - This program 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 this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - ************************************************************************ - ************************************************************************/ - - - -#ifndef __signals_intervals__ -#define __signals_intervals__ - -#include -#include - -#ifdef WIN32 -inline double log2(double e) { return log(e)/log(double(2)); } -#endif - -using namespace std; - -struct interval -{ - bool valid; ///< true if it is a valid interval - double lo; ///< minimal value - double hi; ///< maximal value - - interval () : valid(false), lo(-HUGE_VAL), hi(HUGE_VAL) {} - interval (double n) : valid(true), lo(n), hi(n) {} - interval (double n, double m) : valid(true), lo(min(n,m)), hi(max(n,m)) {} - interval (const interval& r) : valid(r.valid), lo(r.lo), hi(r.hi) {} - - bool isconst() { return valid & (lo == hi); } -}; - -inline ostream& operator<<(ostream& dst, const interval& i) -{ - if (i.valid) { - return dst << "interval(" << i.lo << ", " << i.hi << ")"; - } else { - return dst << "interval()"; - } -} - -inline double min(double x, double y) { return (xy) ? x:y; } -inline double min4(double a, double b, double c, double d) { return min(min(a,b),min(c,d)); } -inline double max4(double a, double b, double c, double d) { return max(max(a,b),max(c,d)); } - -inline interval reunion(const interval& x, const interval& y) -{ - if (x.valid & y.valid) { - return interval(min(x.lo,y.lo), max(x.hi,y.hi)); - } else { - return interval(); - } -} - - -inline interval operator+(const interval& x, const interval& y) -{ - return (x.valid&y.valid) ? interval(x.lo+y.lo, x.hi+y.hi) : interval(); -} - -inline interval operator-(const interval& x, const interval& y) -{ - return (x.valid & y.valid) ? interval(x.lo-y.hi, x.hi-y.lo) : interval();; -} - -inline interval operator*(const interval& x, const interval& y) -{ - if (x.valid&y.valid) { - double a=x.lo*y.lo; - double b=x.lo*y.hi; - double c=x.hi*y.lo; - double d=x.hi*y.hi; - return interval(min4(a,b,c,d), max4(a,b,c,d)); - } else { - return interval(); - } -} - -inline interval operator/(const interval& x, const interval& y) -{ - return (x.valid && y.valid && (y.lo > 0 | y.hi < 0)) - ? x * interval(1/y.hi,1/y.lo) - : interval(); -} - -inline interval operator%(const interval& x, const interval& y) -{ - return (x.valid && y.valid && x.lo >= 0 && y.lo > 0) - ? interval(0,y.hi) - : interval(); -} - -/** - * Convert a number 1bbb..b into a bit mask 1111..1 of same width - */ -inline int bitmask (double x) { - int v = int(x); - for (int i=1; i<32; i*=2) { v |= v>>i; } - return v; -} - -//----------------------booleans&bits-------------------------------------- - -inline interval operator&(const interval& x, const interval& y) -{ - if (x.valid && y.valid) { - if (x.lo >= 0 & y.lo >= 0) { - return interval(0, bitmask(x.hi) & bitmask(y.hi)); - } else if (y.lo >= 0) { - return interval(0, bitmask(y.hi)); - } else if (x.lo >= 0) { - return interval(0, bitmask(y.hi)); - } else { - return interval(); - } - } else if (x.valid & x.lo >= 0) { - return interval(0, bitmask(x.hi)); - } else if (y.valid & y.lo >= 0) { - return interval(0, bitmask(y.hi)); - } else { - return interval(); - } -} - -inline interval operator|(const interval& x, const interval& y) -{ - if (x.valid && y.valid && x.lo >= 0 && y.lo >= 0) { - return interval(0, bitmask(x.hi) | bitmask(y.hi)); - } else { - return interval(); - } -} - -inline interval operator^(const interval&, const interval&) -{ - return interval(); -} - -inline interval operator<<(const interval&, const interval&) -{ - return interval(); -} - -inline interval operator>>(const interval&, const interval&) -{ - return interval(); -} - -// ---------------------comparaisons------------------------------ -// note : les comparaisons ne portent pas sur les intervals -// mais l'interval des comparaisons de signaux - -inline interval operator<(const interval&, const interval&) -{ - return interval(0,1); -} - -inline interval operator<=(const interval&, const interval&) -{ - return interval(0,1); -} - -inline interval operator>(const interval&, const interval&) -{ - return interval(0,1); -} - -inline interval operator>=(const interval&, const interval&) -{ - return interval(0,1); -} - -inline interval operator==(const interval&, const interval&) -{ - return interval(0,1); -} - -inline interval operator!=(const interval&, const interval&) -{ - return interval(0,1); -} - -//----------------------------------------------------------------------- - -inline interval min(const interval& x, const interval& y) -{ - return interval(min(x.lo,y.lo), min(x.hi,y.hi)); -} - -inline interval max(const interval& x, const interval& y) -{ - return interval(max(x.lo,y.lo), max(x.hi,y.hi)); -} - -inline interval abs(const interval& x) -{ - if (x.valid) { - if (x.lo >= 0) { - return x; - } else if (x.hi < 0) { - return interval(fabs(x.hi), fabs(x.lo)); - } else { - return interval(0, max(fabs(x.lo), x.hi)); - } - } else { - return x; - } -} - -#endif