significand - Man Page

Math library (libm, -lm)

#include <math.h>

double significand(double x);
float significandf(float x);
long double significandl(long double x);

significand(), significandf(), significandl():

    /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

These functions return the mantissa of x scaled to the range [1, FLT_RADIX). They are equivalent to

scalb(x, (double) -ilogb(x))

This function exists mainly for use in certain standardized tests for IEEE 754 conformance.

For an explanation of the terms used in this section, see attributes(7).

None.

significand()

BSD.

significand()

BSD.

ilogb(3), scalb(3)

ilogb(3).

The man pages significandf(3) and significandl(3) are aliases of significand(3).