The program rather than each individual number can remember the location of the decimal point. Use fixed floating-point notation Sets the floatfield format flag for the str stream to fixed. 21 Unsigned Fixed-Point Rationals An N-bit binary word when interpreted as an unsigned fixed-point rational can take on values from a subset P of the non-negative rationals given by P p2b 0 p 2N1 p Z.
Fixed-point values are much less convenient to work with than floating point values.
Its important to analyze the way stuff works before implementingfixed point variables. In mathematics a fixed point sometimes shortened to fixpoint also known as an invariant point of a function is an element of the functions domain that is mapped to itself by the function. Fixed-point math typically takes the form of a larger integer number for instance 16 bits where the most significant eight bits are the integer part and the least significant eight bits are the fractional part. More specifically given a function defined on real numbers with real values and given a point in the domain of the fixed point iteration is This gives rise to the sequence which it is hoped will converge to a point.