L1VM - math new expressions

I now made BUGFIXES in the parse rpolish part of Brackets. And I added new math expressions for the {} curly brackets expressions:

// math-test.l1com - Brackets - new math expression test
//
//
#include <intr.l1h>
(main func)
    (set int64 1 zero 0)
    (set int64 1 xd 23)
    (set int64 1 yd 42)
    (set int64 1 zd 0)
    (set int64 1 zerod 0)
    (set int64 1 i 0)
    (set int64 1 f 0)
    (set string s messagestr "xd < yd and xd > 0")
    // new math expression:
    {i = (xd < yd) && (xd > zerod)}
    print_i (i)
    print_n
    (i if)
        print_s (messagestr)
        print_n
    (endif)
    ((((xd yd <)(xd zerod >) &&) f =) f if)
        print_s (messagestr)
        print_n
    (endif)
    (255 zero 0 0 intr0)
(funcend)

This prints:

$ l1vm prog/math-test -q
1
xd < yd and xd > 0
xd < yd and xd > 0

The math operators precedence is that of C!