C++ template library for calculate continuous signals

I'm looking for a C++ template library which implements operations on continuous开发者_StackOverflow社区 signals represented in integer types with their resolutions (fixed point numbers).

e.g: foo, bar, baz are int with 10, 5 and 2 count/unit resolution

foo = 4;
bar = 3;
baz = foo * bar;
printf("%d %d %d\n", foo, bar, baz);

results: 40 15 24

(foo = 4 * 10, bar = 3 * 5, baz = foo / 10 * bar / 5 * 2)

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This is an old C++ library that supports mixing numbers of different precisions. The precisions have to be power of 10.

http://www.efgh.com/software/fixed.htm

If you want math functions (sin, cos, tan) you can try out this library:

http://www.trenki.net/content/view/17/1/

This does not allow you to mix precisions.

Disclaimer: I haven't used any of these !