mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
68424a924c
This adds a simple macro to check (at C level) whether a given
expression is proven to be compile time constant and suitable for
constant folding. This allows writing code like this:
```C
int gpio_read(gpio_t pin) {
if (IS_CT_CONSTANT(pin)) {
/* this implementation should even be able to use the port and
* pin number as immediate in inline assembly */
}
else {
/* less efficient implementation that cannot use port and pin
* number as immediate in inline assembly */
}
}
```
|
||
|---|---|---|
| .. | ||
| include | ||
| assert.c | ||
| atomic_c11.c | ||
| atomic_sync.c | ||
| bitarithm.c | ||
| clist.c | ||
| cond.c | ||
| doc.txt | ||
| init.c | ||
| Kconfig | ||
| Makefile | ||
| mbox.c | ||
| msg_bus.c | ||
| msg.c | ||
| mutex.c | ||
| panic.c | ||
| priority_queue.c | ||
| ringbuffer.c | ||
| rmutex.c | ||
| sched.c | ||
| thread_flags.c | ||
| thread.c | ||