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Make trivial code size enhancements

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This commit is contained in:
Justine Tunney 2021-05-16 18:22:39 -07:00
parent b3838173ec
commit 6a8c21269f
4 changed files with 103 additions and 100 deletions
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29
libc/fmt/fmt.c
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@ -308,7 +308,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
/* evaluate specifier */
qchar = '"';
log2base = 0;
alphabet = "0123456789abcdef";
alphabet = "0123456789abcdefpx";
switch ((d = *format++)) {
case 'p':
flags |= FLAGS_HASH;
@ -316,7 +316,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
signbit = 63;
goto FormatNumber;
case 'X':
alphabet = "0123456789ABCDEF";
alphabet = "0123456789ABCDEFPX";
/* fallthrough */
case 'x':
log2base = 4;
@ -548,8 +548,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
} else {
PUT('+');
}
for (c = 2, k = 10; 10 * k <= decpt; c++, k *= 10) {
}
for (c = 2, k = 10; 10 * k <= decpt; c++) k *= 10;
for (;;) {
i1 = decpt / k;
PUT(i1 + '0');
@ -657,7 +656,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
i1 /= 10;
}
}
if ((sgn = pun.u[1] & 0x80000000)) {
if (pun.u[1] & 0x80000000) {
pun.u[1] &= 0x7fffffff;
if (pun.d || sign) sign = '-';
}
@ -686,18 +685,9 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
PUT(alphabet[17]);
PUT(c);
if (prec > 0 || alt) PUT('.');
if (prec > 0) {
if ((i1 = prec) > 5) i1 = 5;
prec -= i1;
do {
PUT(alphabet[(pun.u[1] >> 16) & 0xf]);
pun.u[1] <<= 4;
} while (--i1 > 0);
while (prec > 0) {
--prec;
PUT(alphabet[(pun.u[0] >> 28) & 0xf]);
pun.u[0] <<= 4;
}
while (prec-- > 0) {
PUT(alphabet[(pun.q >> 48) & 0xf]);
pun.q <<= 4;
}
PUT(alphabet[16]);
if (bex < 0) {
@ -706,8 +696,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
} else {
PUT('+');
}
for (c = 1; 10 * c <= bex; c *= 10) {
}
for (c = 1; 10 * c <= bex;) c *= 10;
for (;;) {
i1 = bex / c;
PUT('0' + i1);
@ -715,7 +704,7 @@ hidden int __fmt(void *fn, void *arg, const char *format, va_list va) {
bex -= i1 * c;
bex *= 10;
}
continue;
break;
case '%':
PUT('%');