diff options
Diffstat (limited to 'frontends/ast/ast.cc')
| -rw-r--r-- | frontends/ast/ast.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc index f3cf8fa7a..25ea3a824 100644 --- a/frontends/ast/ast.cc +++ b/frontends/ast/ast.cc @@ -794,6 +794,24 @@ double AstNode::asReal(bool is_signed) log_abort(); } +RTLIL::Const AstNode::realAsConst(int width) +{ + double v = round(realvalue); + RTLIL::Const result; + if (!isfinite(v)) { + result.bits = std::vector<RTLIL::State>(width, RTLIL::State::Sx); + } else { + bool is_negative = v < 0; + if (is_negative) + v *= -1; + for (int i = 0; i < width; i++, v /= 2) + result.bits.push_back((int(v) & 1) ? RTLIL::State::S1 : RTLIL::State::S0); + if (is_negative) + result = const_neg(result, result, false, false, result.bits.size()); + } + return result; +} + // create a new AstModule from an AST_MODULE AST node static AstModule* process_module(AstNode *ast, bool defer) { |