build: Test the c.zig file too

* Add some more tests for the sqrt/sqrtf implementations.
  The idea is to cross-check the software impl with the HW one whenever
  possible.
* Fix a broken test, oops.
ebf97627fdLemonBoy committed on 4/14/2021, 3:53:26 PMparent1fada37
2 files changedLine totals unavailable