• Math
• Memory
• Process Control
• Input/Output
• Random
• Sorting
• Strings
• Lists
• Encription / Compression / Error correction
• Caching
• Real Time / Date / Calendar Functions
• Validation
• Effecient bit twiddeling

see also:

• http://garbo.uwasa.fi/pc/programming.html
• http://www.cs.ucr.edu/docs/webster/asm/RHUCRLib.html