Files
u-boot/include
Rasmus Villemoes dc323f3bee move more limits from kernel.h to limits.h and standardize their definitions
In a customer project that was building a stand-alone application, I
hit a problem related to the fact that our LONG_MAX and friends are
not standards-compliant, in that they are not "suitable for use in #if
preprocessing directives"

... /toolchain_none/arm-cortexa8-eabi/sys-include/machine/_default_types.h:25:31: error: missing binary operator before token "long"
   25 |   || ( defined(LLONG_MAX) && (LLONG_MAX > 0x7fffffff) )
      |                               ^~~~~~~~~

So following up on commit 13de848338 ("mbedtls: add mbedtls into the
build system"), move the rest of the macros associated to the standard
C types {signed,unsigned} {char, short, int, long, long long} (and of
course bare 'char') to limits.h.

Make use of the fact that both gcc and clang provide suitable
predefined __FOO_MAX__ macros for the signed types, and use a standard
scheme for defining the FOO_MIN and UFOO_MAX macros in terms of
FOO_MAX.

Note that suffixes like L and ULL are allowed for preprocessor
integers; it is (casts) which are not. And using appropriate suffixes,
we can arrange for the type of e.g. UINT_MAX to be "unsigned int" due
to integer promotion rules.

Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
2025-07-14 12:43:28 -06:00
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