__IEEE_*_ENDIAN vs. BYTE_ORDER

[Ralf Corsepius]

Hi,

Newlib's sys/param.h applies __IEEE_*_ENDIAN (from machine/ieeefp.h) to
define BYTE_ORDER.

AFAIU, __IEEE_*_ENDIAN denotes the floating point endianess, only, which
doesn't necessarily match with a CPU's general endianess.


E.g. some arm-CPUs seem to use __IEEE_BIG_ENDIAN, while actually being
little endian targets.

On these targets newlib's sys/param.h results into
#define __IEEE_BIG_ENDIAN
#define BYTE_ORDER BIG_ENDIAN

even for little endian arm targets, while I think
#define __IEEE_BIG_ENDIAN
#define BYTE_ORDER LITTLE_ENDIAN

would have been correct.

I.e. I suspect newlib's sys/param.h to be "illegally" using
__IEEE_*_ENDIAN to setup BYTE_ORDER. I am wrong or right?

Ralf