1 .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
2 .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
3 .\" <mtk.manpages@gmail.com>
5 .\" %%%LICENSE_START(VERBATIM)
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15 .\" Since the Linux kernel and libraries are constantly changing, this
16 .\" manual page may be incorrect or out-of-date. The author(s) assume no
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18 .\" the use of the information contained herein. The author(s) may not
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20 .\" which is licensed free of charge, as they might when working
23 .\" Formatted or processed versions of this manual, if unaccompanied by
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27 .\" References consulted:
28 .\" Linux libc source code
29 .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
31 .\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
32 .\" Modified 2002-07-27 by Walter Harms
33 .\" (walter.harms@informatik.uni-oldenburg.de)
35 .TH ASINH 3 2016-03-15 "GNU" "Linux Programmer's Manual"
37 asinh, asinhf, asinhl \- inverse hyperbolic sine function
42 .BI "double asinh(double " x );
44 .BI "float asinhf(float " x );
46 .BI "long double asinhl(long double " x );
52 Feature Test Macro Requirements for glibc (see
53 .BR feature_test_macros (7)):
59 _ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
60 || _XOPEN_SOURCE\ >=\ 500
61 .\" || _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
62 || /* Since glibc 2.19: */ _DEFAULT_SOURCE
63 || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
69 _ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
70 || /* Since glibc 2.19: */ _DEFAULT_SOURCE
71 || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
75 These functions calculate the inverse hyperbolic sine of
77 that is the value whose hyperbolic sine is
80 On success, these functions return the inverse hyperbolic sine of
85 is a NaN, a NaN is returned.
89 is +0 (\-0), +0 (\-0) is returned.
93 is positive infinity (negative infinity),
94 positive infinity (negative infinity) is returned.
96 .\" POSIX.1-2001 documents an optional range error for subnormal x;
97 .\" glibc 2.8 does not do this.
101 For an explanation of the terms used in this section, see
107 Interface Attribute Value
112 T} Thread safety MT-Safe
115 C99, POSIX.1-2001, POSIX.1-2008.
117 The variant returning