This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
 RealDigits RealDigits[ x ] gives a list of the digits in the approximate real number x, together with the number of digits that are to the left of the decimal point. RealDigits[ x , b ] gives a list of base-b digits in x. RealDigits[ x , b , len ] gives a list of len digits. RealDigits[ x , b , len , n ] gives len digits starting with the coefficient of . RealDigits[ x ] returns a list of digits whose length is equal to Precision[ x ]. RealDigits[ x ] and RealDigits[ x , b ] require that x be an approximate real number, returned for example by N. RealDigits[ x , b , len ] also works on exact numbers. If len is larger than Log[10, b ] Precision[ x ] remaining digits are filled in as Indeterminate. RealDigits[ x , b , len , n ] starts with the digit which is the coefficient of , truncating or padding with zeros as necessary. RealDigits[ x , b , len , -1] starts with the digit immediately to the right of the base b decimal point in x. The base b in RealDigits[ x , b ] need not be an integer. For any real b such that , RealDigits[ x , b ] successively finds the largest integer multiples of powers of b that can be removed while leaving a non-negative remainder. RealDigits[ x ] discards the sign of x. FromDigits can be used as the inverse of RealDigits. See the Mathematica book: Section 3.1.3. See also: MantissaExponent, IntegerDigits, BaseForm, FromDigits. Further Examples The second input gives the digits in an approximation to . In[1]:= Out[1]= In[2]:= Out[2]= Similarly these are digits in base . In[3]:= Out[3]= In[4]:= Out[4]=