Compare op1 and op2. Return a positive value if op1 > op2, zero if op1 = op2, and a negative value if op1 < op2.
mpf_cmp_d can be called with an infinity, but results are undefined for
This function is mathematically ill-defined and should not be used.
Return non-zero if the first op3 bits of op1 and op2 are equal, zero otherwise. Note that numbers like e.g., 256 (binary 100000000) and 255 (binary 11111111) will never be equal by this function’s measure, and furthermore that 0 will only be equal to itself.
Compute the relative difference between op1 and op2 and store the result in rop. This is abs(op1-op2)/op1.
Return +1 if op > 0, 0 if op = 0, and -1 if op < 0.
This function is actually implemented as a macro. It evaluates its argument multiple times.