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fixed bug #34541: LWIP_U32_DIFF is unnecessarily complex: removed that define

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This commit is contained in:
Simon Goldschmidt 2011-10-13 19:29:48 +02:00
parent dc34636598
commit cf1be4ae2d
3 changed files with 4 additions and 5 deletions
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3
CHANGELOG
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@ -69,6 +69,9 @@ HISTORY
++ Bugfixes:
2011-10-13: Simon Goldschmidt
* def.h, timers.c: fixed bug #34541: LWIP_U32_DIFF is unnecessarily complex
2011-10-13: Simon Goldschmidt
* sockets.c, api_lib.c: fixed bug #34540: compiler error when CORE_LOCKING is
used and not all protocols are enabled

2
src/core/timers.c
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@ -426,7 +426,7 @@ sys_check_timeouts(void)
now = sys_now();
/* this cares for wraparounds */
diff = LWIP_U32_DIFF(now, timeouts_last_time);
diff = now - timeouts_last_time;
do
{
#if PBUF_POOL_FREE_OOSEQ

4
src/include/lwip/def.h
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@ -47,10 +47,6 @@ extern "C" {
#define NULL ((void *)0)
#endif
/** Get the absolute difference between 2 u32_t values (correcting overflows)
* 'a' is expected to be 'higher' (without overflow) than 'b'. */
#define LWIP_U32_DIFF(a, b) (((a) >= (b)) ? ((a) - (b)) : (((a) + ((b) ^ 0xFFFFFFFF) + 1)))
/* Endianess-optimized shifting of two u8_t to create one u16_t */
#if BYTE_ORDER == LITTLE_ENDIAN
#define LWIP_MAKE_U16(a, b) ((a << 8) | b)