Floating-point encoding

MQENC_FLOAT_UNDEFINED

Floating-point numbers are represented using an encoding that is undefined.

MQENC_FLOAT_IEEE_NORMAL

Floating-point numbers are represented using the standard IEEE ¹ floating-point format, with the bytes arranged as follows:

• The least significant byte in the mantissa has the highest address of any of the bytes in the number; the byte containing the exponent has the lowest address
• The least significant bit in each byte is adjacent to the byte with the next higher address; the most significant bit in each byte is adjacent to the byte with the next lower address

Details of the IEEE float encoding can be found in IEEE Standard 754.

MQENC_FLOAT_IEEE_REVERSED

Floating-point numbers are represented in the same way as MQENC_FLOAT_IEEE_NORMAL, but with the bytes arranged in reverse order. The bits within each byte are arranged in the same way as MQENC_FLOAT_IEEE_NORMAL.

MQENC_FLOAT_S390

Floating-point numbers are represented using the standard System/390 floating-point format; this is also used by System/370.

Parent topic: Machine encodings ¹ The Institute of Electrical and Electronics Engineers