functions.h

#ifndef PM_FUNCTIONS
#define PM_FUNCTIONS
 
#include <stddef.h>
 
 
/* Function interface. */
typedef double (*pm_function)(double lhs, size_t argc, double *argv);
 
/* List of built-in functions. */
extern pm_function pm_functions[];
 
/* Their names. */
extern const char *pm_function_names[];
 
/* Their count. */
extern size_t pm_function_count;
 
 
#endif