51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
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/*
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* Support functions for VHDL output.
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*
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* Copyright (C) 2008 Nick Gasson (nick@nickg.me.uk)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "vhdl_target.h"
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#include "support.hh"
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#include <cassert>
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void unsigned_to_boolean::emit(std::ostream &of, int level) const
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{
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of << "function " << function_name()
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<< "(X : unsigned) return Boolean is";
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newline(of, level);
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of << "begin";
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newline(of, indent(level));
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of << "return X /= To_Unsigned(0, X'Length);";
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newline(of, level);
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of << "end function;";
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newline(of, level);
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}
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void signed_to_boolean::emit(std::ostream &of, int level) const
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{
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of << "function " << function_name()
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<< "(X : signed) return Boolean is";
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newline(of, level);
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of << "begin";
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newline(of, indent(level));
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of << "return X /= To_Signed(0, X'Length);";
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newline(of, level);
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of << "end function;";
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newline(of, level);
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}
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