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The following commit(s) were added to refs/heads/master by this push:
new 84059a949c Revert "lib/math32.h: support LOG2_CEIL/LOG2_FLOOR function
at compile time"
84059a949c is described below
commit 84059a949c658416e99b9256a6b0dae44d16e2ec
Author: Xiang Xiao <xiaoxi...@xiaomi.com>
AuthorDate: Mon Feb 13 01:54:58 2023 +0800
Revert "lib/math32.h: support LOG2_CEIL/LOG2_FLOOR function at compile time"
avoid the duplicated FLSxx and LOG2xx macro
This reverts commit 224f53fe0270a03c58d167ef2ea1c0e974e86a7f.
---
include/nuttx/lib/math32.h | 30 ------------------------------
1 file changed, 30 deletions(-)
diff --git a/include/nuttx/lib/math32.h b/include/nuttx/lib/math32.h
index 587fdab1c3..c8c79e1037 100644
--- a/include/nuttx/lib/math32.h
+++ b/include/nuttx/lib/math32.h
@@ -29,36 +29,6 @@
#include <inttypes.h>
#include <stdint.h>
-#include <inttypes.h>
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/* Returns one plus the index of the most significant 1-bit of n,
- * or if n is zero, returns zero.
- */
-
-#if UINTPTR_MAX > UINT32_MAX
-# define FLS(n) ((n) & UINT64_C(0xffffffff00000000) ? 32 + \
- FLS32((size_t)(n) >> 32) : FLS32(n))
-#else
-# define FLS(n) FLS32(n)
-#endif
-
-#define FLS32(n) ((n) & 0xffff0000 ? 16 + FLS16((n) >> 16) : FLS16(n))
-#define FLS16(n) ((n) & 0xff00 ? 8 + FLS8 ((n) >> 8) : FLS8 (n))
-#define FLS8(n) ((n) & 0xf0 ? 4 + FLS4 ((n) >> 4) : FLS4 (n))
-#define FLS4(n) ((n) & 0xc ? 2 + FLS2 ((n) >> 2) : FLS2 (n))
-#define FLS2(n) ((n) & 0x2 ? 1 + FLS1 ((n) >> 1) : FLS1 (n))
-#define FLS1(n) ((n) & 0x1 ? 1 : 0)
-
-/* Returns round up and round down value of log2(n). Note: it can be used at
- * compile time.
- */
-
-#define LOG2_CEIL(n) ((n) & (n - 1) ? FLS(n) : FLS(n) - 1)
-#define LOG2_FLOOR(n) (FLS(n) - 1)
/****************************************************************************
* Pre-processor Definitions
