1ASINH(3)                   Linux Programmer's Manual                  ASINH(3)
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NAME

6       asinh, asinhf, asinhl - inverse hyperbolic sine function
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SYNOPSIS

9       #include <math.h>
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11       double asinh(double x);
12       float asinhf(float x);
13       long double asinhl(long double x);
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15       Link with -lm.
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17   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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19       asinh():
20           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
21               || _XOPEN_SOURCE >= 500
22               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
23               || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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25       asinhf(), asinhl():
26           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
27               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
28               || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

31       These functions calculate the inverse hyperbolic sine of x; that is the
32       value whose hyperbolic sine is x.
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RETURN VALUE

35       On success, these functions return the inverse hyperbolic sine of x.
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37       If x is a NaN, a NaN is returned.
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39       If x is +0 (-0), +0 (-0) is returned.
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41       If x is positive infinity (negative infinity), positive infinity (nega‐
42       tive infinity) is returned.
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ERRORS

45       No errors occur.
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ATTRIBUTES

48       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
49       tributes(7).
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51       ┌────────────────────────────────────────────┬───────────────┬─────────┐
52       │Interface                                   │ Attribute     │ Value   │
53       ├────────────────────────────────────────────┼───────────────┼─────────┤
54       │asinh(), asinhf(), asinhl()                 │ Thread safety │ MT-Safe │
55       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

58       C99, POSIX.1-2001, POSIX.1-2008.
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60       The variant returning double also conforms to SVr4, 4.3BSD.
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SEE ALSO

63       acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)
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COLOPHON

66       This page is part of release 5.12 of the Linux  man-pages  project.   A
67       description  of  the project, information about reporting bugs, and the
68       latest    version    of    this    page,    can     be     found     at
69       https://www.kernel.org/doc/man-pages/.
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73GNU                               2021-03-22                          ASINH(3)
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