fsqrt
Replace stack element 0 with the square root of its value.
fsqrt
Add the integer value in stack element 1 to the exponent of stack element 0 (multiplication and division by powers of 2).
fscale
fprem
Divide stack element 0 by stack element 1 and return the (partial) remainder to stack element 0.
fprem
frndint
Round the value in stack element 0 to an integer according to the FPU control word RC field.
frndint
fxtract
Separate stack element 0 into its exponent and significand and return the exponent to stack element 0, then push the significand onto the FPU stack.
fxtract
fabs
Replace stack element 0 with its absolute value.
fabs
fchs
Replace the sign of stack element 0 with the opposite sign.
fchs