significand(3) Library Functions Manual significand(3) NAME significand, significandf, significandl - get mantissa of floating- point number LIBRARY Math library (libm, -lm) SYNOPSIS #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 DESCRIPTION These functions return the mantissa of x scaled to the range [1,2). 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 at- tributes(7). ┌────────────────────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├────────────────────────────────────────────┼───────────────┼─────────┤ │significand(), significandf(), │ Thread safety │ MT-Safe │ │significandl() │ │ │ └────────────────────────────────────────────┴───────────────┴─────────┘ STANDARDS These functions are nonstandard; the double version is available on a number of other systems. SEE ALSO ilogb(3), scalb(3) Linux man-pages 6.03 2023-02-05 significand(3)
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