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bc: further simplify string-to-number conversion code

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function                                             old     new   delta
bc_program_index                                      66      64      -2
bc_program_num                                       983     963     -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-22)             Total: -22 bytes
   text	   data	    bss	    dec	    hex	filename
 985706	    477	   7296	 993479	  f28c7	busybox_old
 985684	    477	   7296	 993457	  f28b1	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-12-09 13:33:52 +01:00
parent 4a024c7719
commit 218ed1cf54
1 changed files with 7 additions and 1 deletions
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8
miscutils/bc.c
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@ -2246,8 +2246,14 @@ static void bc_num_parseDecimal(BcNum *n, const char *val)
n->rdx = (size_t)((val + len) - (ptr + 1));
if (!zero) {
for (i = len - 1; i < len; ++n->len, i -= 1 + (i && val[i - 1] == '.'))
i = len - 1;
for (;;) {
n->num[n->len] = val[i] - '0';
++n->len;
skip_dot:
if ((ssize_t)--i == (ssize_t)-1) break;
if (val[i] == '.') goto skip_dot;
}
}
}