The support files for using the uM-FPU V3.1 chip with PicBasic Pro already have definitions for all the opcodes. Any opcode that conflicts with a reserved word has an F_ prefix. e.g. SIN is F_SIN, COS is F_COS, etc.

See any of the support files for a full list of the opcode definitions.
e.g. template-spi.bas or template-i2c.bas

The PBP support files are at:
http://www.micromegacorp.com/downloads.html