float to binary number

[revathivenkat]

hi i want to multiply a float value 0.707 and 3 in binary.....how to convert 0.707 into binary and multiply with binary value of 3......any one help me....

 

[FvM]

If you really mean float, then you need to refer to a floating point number format, mostly IEEE-754 https://en.wikipedia.org/wiki/IEEE_754

Otherwise try to clarify the question.

 

[revathivenkat]

i want to multipliy 0.707 X 3 in binary form...how to do that.....

 

[FvM]

You need to decide about a suitable number presentation for the decimal fractional number, e.g. fixed point binary.

 

[vny]

hi,
if you are using fixed point multiplication multiply the fractional number with a constant say 100,represent it in a fixed point format(same as 3) and do the multiplication in same number format.

vny

 

[FvM]

Binary fixed point number formats are using 2^N scaling factors to allow easy scaling of multiply results. In the present case, a factor of 256 (8 fractional bits) is suffcient to represent the numbers.