Fixed-point C compiler for TMS320C50 digital signal processor

A xed-point C compiler is developed for convenient and efcient programming of TMS320C50 xed-point digital signal processor. This compiler supports the `fix' data type that can have an individual integer word-length according to the range of a variable. It can add or subtract two data having di erent integer word-lengths by automatically inserting shift operations. The accuracy of xed-point multiply operation is signi cantly increased by storing the upper part of the multiplied double-precision result instead of keeping the lower part as conducted in the integer multiplication. Several target speci c code optimization techniques are employed to improve the compiler e ciency. The empirical results show that the execution speed of a xed-point C program is much, about an order of magnitude, faster than that of a oating-point C program in a xed-point digital signal processor.