used to return "" and not bool(false). It's not worth keeping it because
STR_FREE() and zval_dtor() always have to check for it and it slows down
the general case. In addition, it seems that empty_string has been abused
quite a lot, and was used not only for setting zval's but generally in
PHP code instead of "", which wasn't the intention. Last but not least,
nuking empty_string should improve stability as I doubt every place
correctly checked if they are not mistakenly erealloc()'ing it or
calling efree() on it.
NOTE: Some code is probably broken. Each extension maintainer should
check and see that my changes are OK. Also, I haven't had time to touch
PECL yet. Will try and do it tomorrow.
negative memory size in situations where the sprintf implementation of the
host system generated less decimal places than were requested.
Resolved this issue by making number_format examine the string returned
by spprintf and have it pad to the correct number of decimal places.
Added a test-case based on the bug report; the length of decimal places
required to trigger this bug is sprintf implementation dependent; as the
implementation is now using spprintf (provided by PHP), that number is
78 digits (NDIG - 2).
# I played with the idea of enhancing sprintf to do the equivalent, but
# it was too much effort considering that the precision of floats/doubles
# is not good enough to warrant it.
# This fix could do with some QA from someone else to make sure there are
# no memory bounds problems and then MFH it to PHP_4_3
in php_config.h. Redefine the zend_* versions in the case of Win32.
This fixes the build on systems that don't provide a native version of,
say, isinf() (e.g. Solaris).
pow() tests.
@- Fixed pow(), and added finite(), isinf(), and isnan(). (Jim)
# Jeroen was on crack, and apparently flunked arithmetic. Names of new
# functions subject to change if people get persnickety about them.
# (They're currently the same as the underlying C library function
# names. Hope nobody forgets to update the tests if they change the
# names.)
# Oh, and pow() uses the new parameter-passing API now.
