_Isdst returns -1. _Daysto(year, month) adds the leap days before the year
to the common or leap days-before-month table, as Dinkumware's _Daysto does,
and throws for a month outside the twelve table entries the module would
index past. _FXp_getw sums up to four float parts as Dinkumware's _Xp_getw
does. Read to the return from firmware 13.42's libSceLibcInternal,
disassembly only, not measured on a console.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
