Syntax
#include <math.h> double ldexp(double x, int exp);Description
ldexp calculates the value of x * (2exp).
ldexp returns the value of x*(2exp). If an overflow results, the function returns +HUGE_VAL for a large result or -HUGE_VAL for a small result, and sets errno to ERANGE.
This example computes y as 1.5 times 2 to the fifth power (1.5*25):
#include <math.h>
int main(void)
{
double x,y;
int p;
x = 1.5;
p = 5;
y = ldexp(x, p);
printf("%lf times 2 to the power of %d is %lf\n", x, p, y);
return 0;
/****************************************************************************
The output should be:
1.500000 times 2 to the power of 5 is 48.000000
****************************************************************************/
}
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