BinaryToFloat (String function)

Convert binary string representation of a number to floating point (String class)

This intrinsic function converts a binary string representation of a floating point number to that number.

The BinaryToFloat function is available as of version 7.5 of the Sirius Mods.

Syntax

%number = string:BinaryToFloat

Syntax terms

%num	A numeric variable to receive the float value of the method object string.
string	A binary string value that can have a length of 4, 8, or 16 bytes.

Usage notes

• The inverse of the BinaryToFloat method is FloatToBinary.

Examples

The following program demonstrates the BinaryToFloat method, converting a series of different-length representations of the same float value.

The example also uses:

• The Right method.
• The Substring method.
• The PrintText statement.

   begin
     image silly
        a   is float len 4
        b   is float len 8
        c   is float len 16
      end image
      prepare image silly
      %i is float
      %s is string len 30

      for %i from -3.3 to 3.3 by 1.1
         printText {%i:right(15)}:
         %silly:a = %i; %silly:b = %i; %silly:c = %i;
         %s = $lstr_get_image('SILLY')
         printText {~} = {%s:stringToHex}
         printText {~} = {%s:substring(1, 4):binaryToFloat}
         printText {~} = {%s:substring(5, 8):binaryToFloat}
         printText {~} = {%s:substring(13, 16):binaryToFloat}
      end for
   end

The result is:

              -3.3:
   %s:stringToHex = C134CCCDC134CCCCCCCCCCCCC134CCCCCCCCCCCC0000000000000000
   %s:substring(1, 4):binaryToFloat = -3.30000019073486
   %s:substring(5, 8):binaryToFloat = -3.3
   %s:substring(13, 16):binaryToFloat = -3.3
              -2.2:
   %s:stringToHex = C1233333C123333333333333C1233333333333330000000000000000
   %s:substring(1, 4):binaryToFloat = -2.19999980926514
   %s:substring(5, 8):binaryToFloat = -2.2
   %s:substring(13, 16):binaryToFloat = -2.2
              -1.1:
   %s:stringToHex = C111999AC111999999999999C1119999999999990000000000000000
   %s:substring(1, 4):binaryToFloat = -1.10000038146973
   %s:substring(5, 8):binaryToFloat = -1.1
   %s:substring(13, 16):binaryToFloat = -1.1
                 0:
   %s:stringToHex = 00000000000000000000000000000000000000000000000000000000
   %s:substring(1, 4):binaryToFloat = 0
   %s:substring(5, 8):binaryToFloat = 0
   %s:substring(13, 16):binaryToFloat = 0
               1.1:
   %s:stringToHex = 4111999A411199999999999941119999999999990000000000000000
   %s:substring(1, 4):binaryToFloat = 1.10000038146973
   %s:substring(5, 8):binaryToFloat = 1.1
   %s:substring(13, 16):binaryToFloat = 1.1
               2.2:
   %s:stringToHex = 41233333412333333333333341233333333333330000000000000000
   %s:substring(1, 4):binaryToFloat = 2.19999980926514
   %s:substring(5, 8):binaryToFloat = 2.2
   %s:substring(13, 16):binaryToFloat = 2.2
               3.3:
   %s:stringToHex = 4134CCCD4134CCCCCCCCCCCC4134CCCCCCCCCCCC0000000000000000
   %s:substring(1, 4):binaryToFloat = 3.30000019073486
   %s:substring(5, 8):binaryToFloat = 3.3
   %s:substring(13, 16):binaryToFloat = 3.3

See also

List of intrinsic String methods