Guy Rouillier wrote:
The IBM implementation provided language libraries (usually COBOL) that also supported packed decimal, so precision was maintained throughout the entire application stack.
IBM 360/370/390/etcetc/Zsystem has BCD op codes in the instruction set architecture. microcoded of course, but they generally ran at the memory bandwidth.
but, postgres's base 10000 'numeric' datatype is perfectly useful for this. high precision numeric divides are probably fugly, but for normal business math, they perform quite nicely.
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