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Jeff Epler 9632360caa
Use a macro to compute the size of arrays at compile time (#18044)
* Add ARRAY_SIZE and CEILING utility macros

* Apply a coccinelle patch to use ARRAY_SIZE

* fix up some straggling items

* Fix 'make test:secure'

* Enhance ARRAY_SIZE macro to reject acting on pointers

The previous definition would not produce a diagnostic for
```
int *p;
size_t num_elem = ARRAY_SIZE(p)
```
but the new one will.

* explicitly get definition of ARRAY_SIZE

* Convert to ARRAY_SIZE when const is involved

The following spatch finds additional instances where the array is
const and the division is by the size of the type, not the size of
the first element:
```
@ rule5a using "empty.iso" @
type T;
const T[] E;
@@

- (sizeof(E)/sizeof(T))
+ ARRAY_SIZE(E)

@ rule6a using "empty.iso" @
type T;
const T[] E;
@@

- sizeof(E)/sizeof(T)
+ ARRAY_SIZE(E)
```

* New instances of ARRAY_SIZE added since initial spatch run

* Use `ARRAY_SIZE` in docs (found by grep)

* Manually use ARRAY_SIZE

hs_set is expected to be the same size as uint16_t, though it's made
of two 8-bit integers

* Just like char, sizeof(uint8_t) is guaranteed to be 1

This is at least true on any plausible system where qmk is actually used.

Per my understanding it's universally true, assuming that uint8_t exists:
https://stackoverflow.com/questions/48655310/can-i-assume-that-sizeofuint8-t-1

* Run qmk-format on core C files touched in this branch

Co-authored-by: Stefan Kerkmann <karlk90@pm.me>
2022-08-30 10:20:04 +02:00
..
lfk65_hs Remove UNUSED_PINS (#17931) 2022-08-06 23:23:35 +10:00
lfk78 RESET -> QK_BOOT user keymaps (#17940) 2022-08-21 23:55:30 +01:00
lfk87 RESET -> QK_BOOT user keymaps (#17940) 2022-08-21 23:55:30 +01:00
lfkpad Use a macro to compute the size of arrays at compile time (#18044) 2022-08-30 10:20:04 +02:00
mini1800 RESET -> QK_BOOT user keymaps (#17940) 2022-08-21 23:55:30 +01:00
smk65 Merge remote-tracking branch 'upstream/master' into develop 2022-08-20 10:55:40 +10:00
issi.c
issi.h Change keyboard level include guards to pragma once (#14248) 2021-09-01 19:03:14 +10:00
lighting.c
lighting.h Change keyboard level include guards to pragma once (#14248) 2021-09-01 19:03:14 +10:00
readme.md
TWIlib.c
TWIlib.h

LFKeyboards

This is the parent directory for all LFKeyboard keyboards.

Keyboard Maintainer: LFKeyboards
Hardware Availability: LFKeyboards.com

See build environment setup then the make instructions for more information.