Brain16 rounds once

# A number into a brain16 rounds once, to the nearest brain16 (types.md). 25262379159781017 lies between
# 179 x 2^47 and 180 x 2^47, just below half way, so it rounds down. Through bin32 first it would land
# exactly half way and tie up (check claude, 2026-10-15).
MAIN {
    let 'v': int64 = 25262379159781017;
    let 'w' := to.brain16['v'];
    let 'l': brain16 = 25262379159781017.0;
    std::print.stored['w', newln];
    std::print.stored['l', newln];
    # a bin64 into a brain16 rounds once too: 1 + 2^-8 + 2^-30 is nearest 1 + 2^-7, where 32 bits
    # would drop the 2^-30 and tie down to 1 (compiler claude's case)
    let 'x': bin64 = 1.0039062509313226;
    std::print.stored[to.brain16['x'], newln];
    # a decimal rounds from its exact value: just below the half step 1.01171875 rounds down, though as
    # a bin64 it would be the half step itself and tie up (check claude, 2026-10-15); the half step ties to even
    let 'below': brain16 = 1.01171874999999999999;
    let 'tie': brain16 = 1.01171875;
    let 'text' := to.brain16["1.01171874999999999999"] otherwise 1.0;
    std::print.stored['below', " ", 'tie', " ", 'text', newln];
}