Char.to_upper: def of Base
Import: import Base
Lines 1974-1977 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=1974&end_line=1977

import Base

def Char.to_upper(c: Char) -> Char:
  match c:
    case Chr{+x}:
      Chr{U32.sub(x, U32.mul(Bool.to_u32(Char.is_lower(Chr{x})), 32))}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.to_u32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char.is_lower
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub