Are the platforms covered by the C standard still in use? [duplicate]

Question

Possible Duplicate:
Rephrased: list of platforms supported by the C standard

The C standard is very loosely defined: - it covers two's complement, ones' complement, signed magnitude - integers can be of various width, with padding bits - certain bit patterns may not represent valid values.

There is a obvious downside to this: it make portable code harder to write. Does anyone know of platforms for which there are still active development work, but which are

• not 2's complement or
• the integer width is not 32 bits or 64 bits or
• some integer types have padding bits or
• if you worked on a 2's complement machine, the bit pattern with sign bit 1 and all value bits zero is not a valid negative number or
• integer conversion from signed to unsigned (and vice versa) is not via verbatim copying of bit patterns or
• right shift of integer is not arithmetic shift or
• the number of value bits in an unsigned type is not the number of value bits in the corresponding signed type + 1 or
• conversion from a wider int type to a smaller type is not by truncation of the left most bits which would not fit

Answer 1

yes...it is still used in embedded system and in micro-controllers. It is also used in education purposes.

Answer 2

yes, we see this all the time when working with customizable microcontrolers and DSPs for things like audio processing.