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chelper: Add compiler.h header

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Add the compiler.h header file to the chelper code - this adds a
number of useful gcc definitions.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-06-05 21:25:37 -04:00
parent bedbfceafc
commit 189ebb4c7d
3 changed files with 49 additions and 7 deletions
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7
klippy/chelper/stepcompress.c
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@ -20,6 +20,7 @@
#include <stdio.h> // fprintf
#include <stdlib.h> // malloc
#include <string.h> // memset
#include "compiler.h" // DIV_ROUND_UP
#include "pyhelper.h" // errorf
#include "serialqueue.h" // struct queue_message
@ -44,12 +45,10 @@ struct stepcompress {
* Step compression
****************************************************************/
#define DIV_UP(n,d) (((n) + (d) - 1) / (d))
static inline int32_t
idiv_up(int32_t n, int32_t d)
{
return (n>=0) ? DIV_UP(n,d) : (n/d);
return (n>=0) ? DIV_ROUND_UP(n,d) : (n/d);
}
static inline int32_t
@ -116,7 +115,7 @@ compress_bisect_add(struct stepcompress *sc)
int32_t nextaddfactor = nextcount*(nextcount-1)/2;
int32_t c = add*nextaddfactor;
if (nextmininterval*nextcount < nextpoint.minp - c)
nextmininterval = DIV_UP(nextpoint.minp - c, nextcount);
nextmininterval = DIV_ROUND_UP(nextpoint.minp - c, nextcount);
if (nextmaxinterval*nextcount > nextpoint.maxp - c)
nextmaxinterval = (nextpoint.maxp - c) / nextcount;
if (nextmininterval > nextmaxinterval)