A :ref:`floating-point_number<amdgpu_synid_floating-point_number>`, an :ref:`integer_number<amdgpu_synid_integer_number>`, or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`.
The value is converted to *f16* as described :ref:`here<amdgpu_synid_fp_conv>`.
