summaryrefslogtreecommitdiff
path: root/src/stddef/offsetof.c
diff options
context:
space:
mode:
authorJakob Kaivo <jkk@ung.org>2019-02-08 18:42:39 -0500
committerJakob Kaivo <jkk@ung.org>2019-02-08 18:42:39 -0500
commit7ef8a7379f7f7d09e71ccae2a0b688c3cd80423f (patch)
tree092ab0aed1769117fd7b28b8592f6f96b0e0d5af /src/stddef/offsetof.c
parent6acf19370e8adff79cd83b257d3f04aeaf2a59dd (diff)
merge sources into single tree
Diffstat (limited to 'src/stddef/offsetof.c')
-rw-r--r--src/stddef/offsetof.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/stddef/offsetof.c b/src/stddef/offsetof.c
new file mode 100644
index 00000000..c5bf733b
--- /dev/null
+++ b/src/stddef/offsetof.c
@@ -0,0 +1,17 @@
+#include <stddef.h>
+#define offsetof(type, member) ((size_t)((void*)&(((type*)0)->##member)))
+
+/** get offset of a structure member **/
+
+/***
+determines the offset, in bytes, of a specified field in a TYPE(struct).
+***/
+
+/*
+PROTOTYPE(size_t offsetof(<var>type</var>, <var>member</var>);)
+RETURN_SUCCESS(the offset of ARGUMENT(member) in ARGUMENT(type))
+UNDEFINED(ARGUMENT(member) is a bit-field)
+*/
+/*
+STDC(1)
+*/