the codice_12 instructions tests if the floating point value is one of eight special floating-point values, which of the eight values will trigger a bit in the output mask register is controlled by the immediate field. the codice_13 instructions perform minimum or maximum operations depending on the value of the immediate field, which can also control if the operation is done absolute or not and separately how the sign is handled. the codice_14 instructions operate on a single source, and subtract from that the integer part of the source value plus a number of bits specified in the immediate field of its fraction.