Function GetNan

source/opt/const_folding_rules.cpp:28–44

Returns a constants with the value NaN of the given type. Only works for 32-bit and 64-bit float point types. Returns |nullptr| if an error occurs.

// Returns a constants with the value NaN of the given type.  Only works for
// 32-bit and 64-bit float point types.  Returns |nullptr| if an error occurs.
const analysis::Constant* GetNan(const analysis::Type* type,
                                 analysis::ConstantManager* const_mgr) {
  const analysis::Float* float_type = type->AsFloat();
  if (float_type == nullptr) {
    return nullptr;
  }

  switch (float_type->width()) {
    case 32:
      return const_mgr->GetFloatConst(std::numeric_limits<float>::quiet_NaN());
    case 64:
      return const_mgr->GetDoubleConst(
          std::numeric_limits<double>::quiet_NaN());
    default:
      return nullptr;
  }
}

// Returns a constants with the value INF of the given type.  Only works for
// 32-bit and 64-bit float point types.  Returns |nullptr| if an error occurs.