[cffi-devel] Grovel float constants

[Liam Healy]

I am trying to use cffi-grovel on GSL's physical constants.
For example, in
http://git.savannah.gnu.org/cgit/gsl.git/tree/const/gsl_const_mksa.h,
these are defined:
#define GSL_CONST_MKSA_SPEED_OF_LIGHT (2.99792458e8) /* m / s */
#define GSL_CONST_MKSA_GRAVITATIONAL_CONSTANT (6.673e-11) /* m^3 / kg s^2 */

When I try to define these using CFFI-grovel
(constant (+mksa-speed-of-light+ "GSL_CONST_MKSA_SPEED_OF_LIGHT"))
I end up with an integer, because the C definition is cast to an
integer prior to generating the
constant.

Is there a way to get around this, so that I can grovel float constants?

Thanks,
Liam