1ASINH(3) Linux Programmer's Manual ASINH(3)
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6 asinh, asinhf, asinhl - inverse hyperbolic sine function
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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 versions <= 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 versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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31 These functions calculate the inverse hyperbolic sine of x; that is the
32 value whose hyperbolic sine is x.
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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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45 No errors occur.
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48 For an explanation of the terms used in this section, see
49 attributes(7).
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51 ┌────────────────────────────┬───────────────┬─────────┐
52 │Interface │ Attribute │ Value │
53 ├────────────────────────────┼───────────────┼─────────┤
54 │asinh(), asinhf(), asinhl() │ Thread safety │ MT-Safe │
55 └────────────────────────────┴───────────────┴─────────┘
57 C99, POSIX.1-2001, POSIX.1-2008.
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59 The variant returning double also conforms to SVr4, 4.3BSD.
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62 acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)
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65 This page is part of release 4.16 of the Linux man-pages project. A
66 description of the project, information about reporting bugs, and the
67 latest version of this page, can be found at
68 https://www.kernel.org/doc/man-pages/.
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72GNU 2017-09-15 ASINH(3)