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LDEXP(3) Linux Programmer's Manual LDEXP(3)

ldexp - multiply floating-point number by integral power of 2

#include <math.h>

double ldexp(double x, int exp);

The ldexp() function returns the result of multiplying the floating-point number x by 2 raised to the power exp.

SVID 3, POSIX, BSD 4.3, ISO 9899

frexp(3), modf(3)

June 6, 1993 BSD