Propertly Truncate Paired Single Move Instructions

[Geotale]

Matches hardware in rounding paired singles after move operations!! Move operations consist of operations which only transfer direct bits (including absolute values and merges) This also accounts for ps_rsqrte because it has a similar quirk Specifically in hardware they're rounded in accordance to their slot:

• PS0 rounds only the mantissa in accordance to the set rounding mode
• PS1 truncates the mantissa

ps_rsqrte also only truncates for PS0 for some reason ^^; This has all been tested on hardware, along with a few edge case tests to ensure this implementation works