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optimize the code of the printf

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This commit is contained in:
flyingfish89 2022-11-28 15:09:38 +08:00 committed by Xiang Xiao
parent 3377aa23ca
commit bb040befee
1 changed files with 6 additions and 30 deletions
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36
libs/libc/stdio/lib_libvsprintf.c
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@ -852,7 +852,8 @@ flt_oper:
lib_stream_put(stream, '.');
for (pos = 1; pos < 1 + prec; pos++)
{
lib_stream_put(stream, pos < ndigs ? _dtoa.digits[pos] : '0');
lib_stream_put(stream, pos < ndigs ?
_dtoa.digits[pos] : '0');
}
}
else if ((flags & FL_ALT) != 0)
@ -871,37 +872,12 @@ flt_oper:
}
lib_stream_put(stream, ndigs);
for (ndigs = '0'; exp >= 10; exp -= 10)
c = __ultoa_invert(exp, (FAR char *)buf, 10) - (FAR char *)buf;
while (c > 0)
{
ndigs += 1;
lib_stream_put(stream, buf[c - 1]);
c--;
}
/* Parse the ndigs if the value of it bigger than '9' */
while (1)
{
if (ndigs >= 'd')
{
lib_stream_put(stream, ((ndigs - '0') / 100) + '0');
ndigs = (ndigs - '0') % 100 + '0';
}
else if (ndigs >= ':')
{
lib_stream_put(stream, ((ndigs - '0') / 10) + '0');
ndigs = (ndigs - '0') % 10 + '0';
}
else if(ndigs >= '0')
{
lib_stream_put(stream, ndigs);
break;
}
else
{
break;
}
}
lib_stream_put(stream, '0' + exp);
}
goto tail;