private void visitLiteralFloat(int opcode, int offset, int length, int bits) {
    String optArg = (length != 1) ? " #" + Hex.u4(bits) : "";

    observer.parsed(
        bytes, offset, length, header(offset) + optArg + " // " + Float.intBitsToFloat(bits));
  }
Helper for {@link #visitConstant} where the constant is a {@code float}.

@param opcode the opcode
@param offset offset to the instruction
@param length instruction length
@param bits constant value, as float-bits
android/android_framework/dex-maker/src/main/java/com/android/dx/cf/direct/CodeObserver.java