set_config_float - Writes a float in the configuration file. Allegro
game programming library.
#include <allegro.h>
void set_config_float(const char *section, const char *name, float
val);
Writes a floating point variable to the current config file. See the
comments about set_config_string().
set_config_file(3alleg), get_config_float(3alleg),
set_config_string(3alleg), set_config_hex(3alleg),
set_config_int(3alleg), set_config_id(3alleg)