how to convert signed decimal to unsigned decimal?

[quer]

signed decimal

please give me an example on how to do it..:|

 

[FvM]

unsigned decimal

The question isn't clear. Only positive numbers can be converted - without changing anything, just copy respectively typecast it. The bit pattern is identical.

 

[quer]

convert signed to unsigned

sorry i mean how to convert numbers like -.023 (decimal) to unsigned decimal (ranging from 0 t 255).. actually i don't know if there is such process...

 

[Aya2002]

convert unsigned to signed

i need it also but in matlab

 

[quer]

converting signed to unsigned

i need it also but in matlab

yeah we are having the same problem

 

[FvM]

unsigned to signed converter

Two comments.
1. If an 8-bit integer (0..255) is representing a negative number like -0.023, it's not unsigned. It's e.g. a fixed point or fractional signed number. Of course you can display it as an unsigned, but it still contains a sign information.

2. You have to know the scaling of your target number format respectively the numeric range represented by it, than a conversion is easy. 0..255 may e.g. represent -1..+1. You can read it then as 2's complement signed value with a power of 2 scaling factor. (-128..127 *1/128). In this case, -0.023 converts to -3 respectively 253 or 0xfd when displayed as unsigned.

 

[Aya2002]

decimal to unsigned

explain more please with another example

 

[FvM]

signed to unsigned convert

I tried to give a sense to an unclear question by suggesting a number format and defining a range. I'd rather like to hear a complete question first.