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   significandf    ( 3 )

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Имя (Name)

significand, significandf, significandl - get mantissa of
       floating-point number

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Синопсис (Synopsis)

#include <math.h>

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

       Link with -lm.

   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

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Описание (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.

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Атрибуты (Attributes)

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

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │significand(), significandf(),        │ Thread safety │ MT-Safe │
       │significandl()                        │               │         │
       └──────────────────────────────────────┴───────────────┴─────────┘

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Стандарты (Conforming to)

These functions are nonstandard; the double version is available
       on a number of other systems.

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Смотри также (See also)

ilogb(3), scalb(3)

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