significand(3)

1significand(3)             Library Functions Manual             significand(3)
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NAME

6       significand,  significandf,  significandl  -  get mantissa of floating-
7       point number
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LIBRARY

10       Math library (libm, -lm)
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SYNOPSIS

13       #include <math.h>
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15       double significand(double x);
16       float significandf(float x);
17       long double significandl(long double x);
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19   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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21       significand(), significandf(), significandl():
22           /* Since glibc 2.19: */ _DEFAULT_SOURCE
23               || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

26       These functions return the mantissa of x scaled  to  the  range  [1,2).
27       They are equivalent to
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29           scalb(x, (double) -ilogb(x))
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31       This  function  exists mainly for use in certain standardized tests for
32       IEEE 754 conformance.
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ATTRIBUTES

35       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
36       tributes(7).
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38       ┌────────────────────────────────────────────┬───────────────┬─────────┐
39       │Interface                                   │ Attribute     │ Value   │
40       ├────────────────────────────────────────────┼───────────────┼─────────┤
41       │significand(), significandf(),              │ Thread safety │ MT-Safe │
42       │significandl()                              │               │         │
43       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

46       None.
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48       significand()
49              BSD.
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HISTORY

52       significand()
53              BSD.
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