bc: no need to "set to zero" BcNum after bc_num_init(), it already is
function old new delta bc_num_init 48 49 +1 bc_program_num 1115 1108 -7 bc_program_exec 4098 4081 -17 bc_vm_init 786 768 -18 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/3 up/down: 1/-42) Total: -41 bytes text data bss dec hex filename 985872 477 7296 993645 f296d busybox_old 985831 477 7296 993604 f2944 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -1399,12 +1399,16 @@ static void bc_num_ten(BcNum *n)
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n->num[1] = 1;
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}
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// Note: this also sets BcNum to zero
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static void bc_num_init(BcNum *n, size_t req)
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{
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req = req >= BC_NUM_DEF_SIZE ? req : BC_NUM_DEF_SIZE;
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memset(n, 0, sizeof(BcNum));
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//memset(n, 0, sizeof(BcNum)); - cleared by assignments below
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n->num = xmalloc(req);
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n->cap = req;
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n->rdx = 0;
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n->len = 0;
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n->neg = false;
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}
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static void bc_num_init_DEF_SIZE(BcNum *n)
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@ -2288,7 +2292,7 @@ static void bc_num_parseBase(BcNum *n, const char *val, BcNum *base)
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}
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bc_num_init(&result, base->len);
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bc_num_zero(&result);
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//bc_num_zero(&result); - already is
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bc_num_one(&mult);
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for (i += 1, digits = 0; i < len; ++i, ++digits) {
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@ -6209,7 +6213,7 @@ static BcStatus bc_program_return(char inst)
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}
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else {
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bc_num_init_DEF_SIZE(&res.d.n);
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bc_num_zero(&res.d.n);
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//bc_num_zero(&res.d.n); - already is
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}
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// We need to pop arguments as well, so this takes that into account.
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@ -6768,8 +6772,7 @@ static BcStatus bc_program_exec(void)
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bc_num_init_DEF_SIZE(&r.d.n);
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if (!bc_num_cmp(num, &G.prog.zero))
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bc_num_one(&r.d.n);
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else
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bc_num_zero(&r.d.n);
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//else bc_num_zero(&r.d.n); - already is
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bc_program_retire(&r, BC_RESULT_TEMP);
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break;
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case BC_INST_NEG:
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@ -7379,10 +7382,10 @@ static void bc_program_init(void)
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#endif
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bc_num_init_DEF_SIZE(&G.prog.last);
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bc_num_zero(&G.prog.last);
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//bc_num_zero(&G.prog.last); - already is
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bc_num_init_DEF_SIZE(&G.prog.zero);
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bc_num_zero(&G.prog.zero);
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//bc_num_zero(&G.prog.zero); - already is
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bc_num_init_DEF_SIZE(&G.prog.one);
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bc_num_one(&G.prog.one);
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