[incubator-nuttx] 02/03: lib/stdlib: Implement aligned_alloc and posix_memalign

[gn...@apache.org]

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commit b8b61dc070c17585ada10f88986b1192d097872a
Author: Xiang Xiao <xi...@xiaomi.com>
AuthorDate: Mon Jun 1 14:21:15 2020 +0800

    lib/stdlib: Implement aligned_alloc and posix_memalign
    
    https://linux.die.net/man/3/aligned_alloc
    
    Signed-off-by: Xiang Xiao <xi...@xiaomi.com>
    Change-Id: I73db1c982e2c3eb73e5960e91c0d471ab967be51
---
 include/stdlib.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/stdlib.h b/include/stdlib.h
index 388cb85..b49723e 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -29,6 +29,7 @@
 #include <nuttx/compiler.h>
 
 #include <sys/types.h>
+#include <errno.h>
 #include <stdint.h>
 #include <limits.h>
 
@@ -255,6 +256,21 @@ FAR void *memalign(size_t, size_t);
 FAR void *zalloc(size_t);
 FAR void *calloc(size_t, size_t);
 
+#ifdef __cplusplus
+inline FAR void *aligned_alloc(size_t a, size_t s)
+{
+  return memalign(a, s);
+}
+
+inline int posix_memalign(FAR void **m, size_t a, size_t s)
+{
+  return (*m = memalign(a, s)) ? OK : ENOMEM;
+}
+#else
+#define aligned_alloc(a, s) memalign((a), (s))
+#define posix_memalign(m, a, s) ((*(m) = memalign((a), (s))) ? OK : ENOMEM)
+#endif
+
 struct mallinfo mallinfo(void);
 
 /* Pseudo-Terminals */