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I'm looking for a 64-bit fixed-point (32,32) library for one of my C implementations.

Similar to this one http://code.google.com/p/libfixmath/

Need support for standard math.h operation.

Did anyone see such implementations?

phuclv
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user2794094
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    asking for library suggestion is off-topic here. You should go to https://softwarerecs.stackexchange.com/ – phuclv Mar 01 '18 at 02:18

1 Answers1

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fixedptc seems to be what you look for. It is a C, header-only and integer-only library for fixed point operations, located at http://www.sourceforge.net/projects/fixedptc

Bitwidth is settable through defines. In your case, you want to compile with -DFIXEDPT_BITS=64 -DFIXED_WBITS=32 to get a (32,32) fixed point number format.

Implemented functions are conversion to string, multiplication, division, square root, sine, cosine, tangent, exponential, power, natural logarithm and arbitrary-base logarithm.

Cimbali
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