[incubator-nuttx] branch master updated: lib_libvscanf.c: Implement "j" modifier for scanf

[xiaoxiang]

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xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new 3e6561c  lib_libvscanf.c: Implement "j" modifier for scanf
3e6561c is described below

commit 3e6561c3cf9bcc5fa81ecf9f5e90dc496bd3d8d3
Author: YAMAMOTO Takashi <yamam...@midokura.com>
AuthorDate: Wed Sep 23 17:52:33 2020 +0900

    lib_libvscanf.c: Implement "j" modifier for scanf
    
    It's a part of C99 and commonly used these days.
---
 libs/libc/stdio/lib_libvscanf.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/libs/libc/stdio/lib_libvscanf.c b/libs/libc/stdio/lib_libvscanf.c
index a4302b3..5bba9ce 100644
--- a/libs/libc/stdio/lib_libvscanf.c
+++ b/libs/libc/stdio/lib_libvscanf.c
@@ -332,6 +332,15 @@ int lib_vscanf(FAR struct lib_instream_s *obj, FAR int 
*lastc,
                       fmt++;
                     }
                 }
+              else if (fmt_char(fmt) == 'j')
+                {
+                  /* Same as long long if available. Otherwise, long. */
+#ifdef CONFIG_LIBC_LONG_LONG
+                  modifier = LL_MOD;
+#else
+                  modifier = L_MOD;
+#endif
+                }
               else if (fmt_char(fmt) == 'h' || fmt_char(fmt) == 'H')
                 {
                   modifier = H_MOD;