2008-12-05 Marek Habersack <mhabersack@novell.com>

2008-12-05  Marek Habersack  <mhabersack@novell.com>

	* configure.in: check whether round (3) and rint (3) are present
	in the C library.

2008-12-05  Marek Habersack  <mhabersack@novell.com>

	* sysmath.c (ves_icall_System_Math_Round2): if round (3) and rint
	(3) functions are present in the C library use them to do the
	job. If they are absent, make sure that the sum of int_part and
	dec_part is rounded before returning. This is necessary due to the
	division of dec_part by the power of 10 before the final addition
	is performed - if the result is not rounded in some cases it will
	yield invalid results.

svn path=/trunk/mono/; revision=120880