ALTFP_MATRIX_MULT problem in Quartus 10.0

You can try editing you .qsf to make the altfp_lib.vh map to a library.

In your project project directory there should be a .qsf file that has a line that looks like this

set_global_assignment -name VHDL_FILE "altfp_lib.v"

Modify this line to set the library name:

set_global_assignment -name VHDL_FILE "altfp_lib.v" -library altfp_lib

I'm not sure if this is the problem, but it might help. I'm just guess here. If your design works fine with just commenting out that line then no need to do this.

I should note that there's probably a way to set the library for a file in Quartus, but I'm not sure how it would be done because I always use the qsf to modify project settings.