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significand

(3)

get mantissa of floating-point number

Library functionsmanpages-dev 6.9.1-1also documents significandf, significandl
#include <math.h> double significand(double x); float significandf(float x); long double significandl(long double x); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): significand(), significandf(), significandl(): /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

LIBRARY

Math library (libm, -lm)

DESCRIPTION

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.

ATTRIBUTES

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

Interface Attribute Value
significand (), significandf (), significandl () Thread safety MT-Safe

STANDARDS

None.

BSD.

HISTORY

See also

ilogb(3)scalb(3)