Description:
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When using the format '%(n' (i.e. represent negative numbers in parenthesis), money_format still prints out a negative sign when its second parameter is 0.00*-1.   It works fine for the following values, however:

-0.00
-0
0*-1
-1*0
-1*0.00
-1.00*0

(Note: echo(0.00*-1) prints out -0.)

Interestingly, using gcc-3.3.4 and glibc-2.3.2, the following fails in a similar fashion:

strfmon(buf, sizeof(buf), "%(n", atof("-0.00"));
/* buf = "-0.00" */

double val = 0.00 * -1;
strfmon(buf, sizeof(buf), "%(n", val);
/* buf = "-0.00" */

double val = -1*0.00;
strfmon(buf, sizeof(buf), "%(n", val);
/* buf = "-0.00" */

It appears it might have something to do with strfmon()'s handling of 'negative zero', except money_format() works correctly for values where strfmon() fails (e.g. -1*0.00).

Reproduce code:
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echo money_format("%(n", 0.00*-1) . "\n";

Expected result:
----------------
0.00

or even

(0.00)

Actual result:
--------------
-0.00