is MPC5643L compliant for standard IEEE-754 ?

[wan35fr]

Hello NXP community ,

MPC5643L has a FPU, only the booke e200z4 has some reference on this standard

i have a question on MPC5643L family,

IEEE-754 is a technical standard for floating-point computation.

is MPC5643L is compliant for standard IEEE-754 ?

              Best regards

                           Erwan

[davidtosenovjan · Accepted solution]

It is quite well described in core reference manual, section 6.3.2:

https://www.nxp.com/docs/en/reference-manual/e200z4RM.pdf

If it is necessary to fully conform with the standard, software intervention may be needed.

SPE/EFPU allows two options single precision floating point capabilities:

1) May be configured to be fully IEEE compliant, in which case awkward corner cases (NaN’s, Infinities, denormalized values) will be handled by software through the raising of exceptions

2) May be configured to be not fully IEEE compliant, in which case arithmetic will saturate or round to zero and no value-dependent exceptions will be raised