6g: mparith functions truncate instead of rounding when changing precision #931
Description
6g doesn't accept this, gccgo does. package main const ten = 100 * 0.1 const fifty = 100 * 0.5 var x int = ten // this does not work var y int = fifty // this works // 6g test.go // test.go:6: constant 10 truncated to integer 0.1 cannot be accurately represented in binary form, but this case seems like it should work. Perhaps there is a rounding bug somewhere or the number of bits used internally needs to be increased (short of using rationals).