shithub: npe

ref: 506bc7e3c3e89cd84ec4d0e74927bd12ad5486c4
dir: /libnpe/exp2.c/

#include <math.h>

#define ln2o1 1.4426950408889634073599

double
exp2(double x)
{
	return exp(x/ln2o1);
}