2.4.8.11 Sharpsign R ¶

#nR

#radixRrational reads rational in radix radix. radix must consist of only digits that are interpreted as an integer in decimal radix; its value must be between 2 and 36 (inclusive). Only valid digits for the specified radix may be used.

For example, #3r102 is another way of writing 11 (decimal), and #11R32 is another way of writing 35 (decimal). For radices larger than 10, letters of the alphabet are used in order for the digits after 9. No alternate # notation exists for the decimal radix since a decimal point suffices.

Figure 2–20 contains examples of the use of #B, #O, #X, and #R.

  #2r11010101  ;Another way of writing 213 decimal  
  #b11010101   ;Ditto                               
  #b+11010101  ;Ditto                               
  #o325        ;Ditto, in octal radix               
  #xD5         ;Ditto, in hexadecimal radix         
  #16r+D5      ;Ditto                               
  #o-300       ;Decimal -192, written in base 8     
  #3r-21010    ;Same thing in base 3                
  #25R-7H      ;Same thing in base 25               
  #xACCEDED    ;181202413, in hexadecimal radix     

        Figure 2–20: Radix Indicator Example       

The consequences are undefined if the token immediately following the #nR does not have the syntax of a rational in radix n.