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For those interested in the fix.
ext/standard/config.m4:
dnl
dnl round fuzz
dnl
+AC_DEFUN([PHP_CHECK_ROUNDING_WORKS],[
AC_MSG_CHECKING([whether rounding works as expected])
AC_TRY_RUN([
#include <math.h>
/* keep this out-of-line to prevent use of gcc inline floor() */
double somefn(double n) {
return floor(n*pow(10,2) + 0.5);
}
int main() {
return somefn(0.045)/10.0 != 0.5;
}
],[
PHP_ROUND_FUZZ=0.5
AC_MSG_RESULT(yes)
],[
PHP_ROUND_FUZZ=0.50000000001
AC_MSG_RESULT(no)
],[
PHP_ROUND_FUZZ=0.50000000001
AC_MSG_RESULT(cross compile)
])
AC_DEFINE_UNQUOTED(PHP_ROUND_FUZZ, $PHP_ROUND_FUZZ, [ see #24142 ])
+])
+PHP_CHECK_ROUNDING_WORKS
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