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* stdlib/strtod_l.c (____STRTOF_INTERNAL): Add branch predictions

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and fix some typos.
	Optimize use of TOLOWER.
This commit is contained in:
Ulrich Drepper 2007-02-22 00:45:40 +00:00
parent 9cf147d84e
commit 621c133d40
2 changed files with 13 additions and 10 deletions
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4
ChangeLog
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@ -1,6 +1,8 @@
2007-02-21 Ulrich Drepper <drepper@redhat.com>
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Optimize use of TOLOWER.
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Add branch predictions
and fix some typos.
Optimize use of TOLOWER.
[BZ #3325]
* sysdeps/i386/fpu/e_fmodf.S: Revert last changes, keep using fprem.

19
stdlib/strtod_l.c
View File

@ -482,7 +482,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
struct locale_data *current = loc->__locales[LC_NUMERIC];
if (group)
if (__builtin_expect (group, 0))
{
grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
if (*grouping <= 0 || *grouping == CHAR_MAX)
@ -548,7 +548,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
&& (wint_t) cp[1] >= L'0' && (wint_t) cp[1] <= L'9')
{
/* We accept it. This funny construct is here only to indent
the code directly. */
the code correctly. */
}
#else
for (cnt = 0; decimal[cnt] != '\0'; ++cnt)
@ -557,7 +557,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
if (decimal[cnt] == '\0' && cp[cnt] >= '0' && cp[cnt] <= '9')
{
/* We accept it. This funny construct is here only to indent
the code directly. */
the code correctly. */
}
#endif
else if (c < L_('0') || c > L_('9'))
@ -643,7 +643,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
while (c == L'0' || ((wint_t) thousands != L'\0' && c == (wint_t) thousands))
c = *++cp;
#else
if (thousands == NULL)
if (__builtin_expect (thousands == NULL, 1))
while (c == '0')
c = *++cp;
else
@ -717,11 +717,12 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
else
{
#ifdef USE_WIDE_CHAR
if ((wint_t) thousands == L'\0' || c != (wint_t) thousands)
if (__builtin_expect ((wint_t) thousands == L'\0', 1)
|| c != (wint_t) thousands)
/* Not a digit or separator: end of the integer part. */
break;
#else
if (thousands == NULL)
if (__builtin_expect (thousands == NULL, 1))
break;
else
{
@ -737,7 +738,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
c = *++cp;
}
if (grouping && cp > start_of_digits)
if (__builtin_expect (grouping != NULL, 0) && cp > start_of_digits)
{
/* Check the grouping of the digits. */
#ifdef USE_WIDE_CHAR
@ -846,7 +847,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
exponent *= 10;
exponent += c - L_('0');
if (exponent > exp_limit)
if (__builtin_expect (exponent > exp_limit, 0))
/* The exponent is too large/small to represent a valid
number. */
{
@ -1100,7 +1101,7 @@ ____STRTOF_INTERNAL (nptr, endptr, group, loc)
/* Now we know the exponent of the number in base two.
Check it against the maximum possible exponent. */
if (bits > MAX_EXP)
if (__builtin_expect (bits > MAX_EXP, 0))
{
__set_errno (ERANGE);
return negative ? -FLOAT_HUGE_VAL : FLOAT_HUGE_VAL;