tree 9c37d0283cc8410560a31f0568d0bbed46af02a9
parent 11a16c8aaaf4222b392ced4713dcb0ba8ba60e25
author Heyi Guo <guoheyi@linux.alibaba.com> 1611122125 +0800
committer Heyi Guo <guoheyi@linux.alibaba.com> 1611123364 +0800

libc/snprintf: use macro to reduce duplicated code

Add macro CHECK_AND_PUT_CHAR to check buffer capacity, save one
character to buffer, and then increase character counter by one in one
single statement, so that 4 similar code pieces can be cleaned.

Signed-off-by: Heyi Guo <guoheyi@linux.alibaba.com>
Change-Id: I2add6b4bd6c24ea3c0d2499a44924e3e8db0f4d1