[PATCH v4 0/4] mem: extend with a few additional helpers similar to existing string-only functions

[Cody P Schafer <dev@codyps.com>]

since v3:

 - fix memeq() return value
 - add memends_str() helper

since v2:

 - switch all the macros to static inline to avoid multiple evaluations of args
 - add patch adding PURE_FUNCTION attributes

since v1:

 - drop a patch that David pulled in
 - add extra macro parens
 - add blank lines after defintions
 - covert memcchr's while loop to a for.
 - change examples for mempbrkm and mempbrk to use '\0' in places
 - fix spelling
 - use memeq() even where we know the mem lengths are equal in memstarts()
 - add a reviewed-by to the 2nd patch, no other changes to that patch.

--

This is essentially a rebased version of a patch I sent out quite some time ago.

At the time, David indicated that it would probably make sense for bytestring
to call the plain mem-versions of these functions, so I've included a helper to
do that as well (and 1 patch to help ccanlint for bytestring pass a bit better).

The selection of mem* functions is entirely based on which ones I need for some
code I was writing, and they are in no way complete (notably, they include mem
variants of strpbrk instead of strspn variants as used in bytestring). I expect
the missing functions can be added as people find a need for them.


Cody P Schafer (4):
  mem: add mem helper functions
  bytestring: use newly added mem helpers
  mem: mark all functions as PURE
  mem: add memends_str() helper for symmetry

 ccan/bytestring/bytestring.h |   9 +--
 ccan/mem/_info               |   1 +
 ccan/mem/mem.c               |  24 ++++++
 ccan/mem/mem.h               | 185 +++++++++++++++++++++++++++++++++++++++++++
 ccan/mem/test/api.c          |  41 +++++++++-
 5 files changed, 253 insertions(+), 7 deletions(-)

-- 
2.5.1

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