math: fix unused variable warnings

Compilers (incorrectly) warn about unused volatile variables:

  math/math_config.h: In function 'force_eval_float':
  math/math_config.h:188:18: warning: unused variable 'y' [-Wunused-variable]

silence them.
1 file changed
tree: 56231a894276ebb1db405739bd3e7c02b4e9fed8
  1. math/
  2. string/
  3. .gitignore
  4. config.mk.dist
  5. LICENSE
  6. Makefile
  7. README