C187 Arithmetic Instructions - Intel 80C186XL User Manual

MATH COPROCESSING
Available data types include temporary real, long real, short real, short integer and word integer.
The 80C187 performs automatic type conversion to temporary real.
Addition
FADD Add real
FADDP Add real and pop
FIADD Integer add
Subtraction
FSUB Subtract real
FSUBP Subtract real and pop
FISUB Integer subtract
FSUBR Subtract real reversed
FSUBRP Subtract real reversed and pop
FISUBR Integer subtract reversed
Multiplication
FMUL Multiply real
FMULP Multiply real and pop
FIMUL Integer multiply
11-4
Table 11-2. 80C187 Arithmetic Instructions
Division
FDIV Divide real
FDIVP Divide real and pop
FIDIV Integer divide
FDIVR Divide real reversed
FDIVRP Divide real reversed and pop
FIDIVR Integer divide reversed
Other Operations
FSQRT Square root
FSCALE Scale
FPREM Partial remainder
FRNDINT Round to integer
FXTRACT Extract exponent and significand
FABS Absolute value
FCHS Change sign
FPREMI Partial remainder (IEEE)