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fea681da | 1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
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2 | .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk |
3 | .\" <mtk.manpages@gmail.com> | |
fea681da | 4 | .\" |
93015253 | 5 | .\" %%%LICENSE_START(VERBATIM) |
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6 | .\" Permission is granted to make and distribute verbatim copies of this |
7 | .\" manual provided the copyright notice and this permission notice are | |
8 | .\" preserved on all copies. | |
9 | .\" | |
10 | .\" Permission is granted to copy and distribute modified versions of this | |
11 | .\" manual under the conditions for verbatim copying, provided that the | |
12 | .\" entire resulting derived work is distributed under the terms of a | |
13 | .\" permission notice identical to this one. | |
c13182ef | 14 | .\" |
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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16 | .\" manual page may be incorrect or out-of-date.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 | |
17 | .\" responsibility for errors or omissions, or for damages resulting from | |
18 | .\" the use of the information contained herein. The author(s) may not | |
19 | .\" have taken the same level of care in the production of this manual, | |
20 | .\" which is licensed free of charge, as they might when working | |
21 | .\" professionally. | |
c13182ef | 22 | .\" |
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23 | .\" Formatted or processed versions of this manual, if unaccompanied by |
24 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 25 | .\" %%%LICENSE_END |
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26 | .\" |
27 | .\" References consulted: | |
28 | .\" Linux libc source code | |
29 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
30 | .\" 386BSD man pages | |
31 | .\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) | |
32 | .\" Modified 1996-06-08 by aeb | |
33 | .\" Modified 2002-07-27 by Walter Harms | |
34 | .\" (walter.harms@informatik.uni-oldenburg.de) | |
35 | .\" | |
c73595c2 | 36 | .TH SINH 3 2015-04-19 "" "Linux Programmer's Manual" |
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37 | .SH NAME |
38 | sinh, sinhf, sinhl \- hyperbolic sine function | |
39 | .SH SYNOPSIS | |
40 | .nf | |
41 | .B #include <math.h> | |
42 | .sp | |
43 | .BI "double sinh(double " x ); | |
d39541ec | 44 | .br |
fea681da | 45 | .BI "float sinhf(float " x ); |
d39541ec | 46 | .br |
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47 | .BI "long double sinhl(long double " x ); |
48 | .fi | |
49 | .sp | |
20c58d70 | 50 | Link with \fI\-lm\fP. |
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51 | .sp |
52 | .in -4n | |
53 | Feature Test Macro Requirements for glibc (see | |
54 | .BR feature_test_macros (7)): | |
55 | .in | |
56 | .sp | |
57 | .ad l | |
58 | .BR sinhf (), | |
59 | .BR sinhl (): | |
b90c43a8 | 60 | .RS 4 |
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61 | _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE || |
62 | _POSIX_C_SOURCE\ >=\ 200112L; | |
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63 | .br |
64 | or | |
4a3c2783 | 65 | .I cc\ -std=c99 |
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66 | .RE |
67 | .ad | |
fea681da | 68 | .SH DESCRIPTION |
5600f73a | 69 | These functions return the hyperbolic sine of |
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70 | .IR x , |
71 | which | |
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72 | is defined mathematically as: |
73 | .nf | |
74 | ||
75 | sinh(x) = (exp(x) \- exp(\-x)) / 2 | |
76 | .fi | |
47297adb | 77 | .SH RETURN VALUE |
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78 | On success, these functions return the hyperbolic sine of |
79 | .IR x . | |
80 | ||
81 | If | |
82 | .I x | |
83 | is a NaN, a NaN is returned. | |
84 | ||
85 | If | |
86 | .I x | |
87 | is +0 (\-0), +0 (\-0) is returned. | |
88 | ||
89 | If | |
90 | .I x | |
91 | is positive infinity (negative infinity), | |
92 | positive infinity (negative infinity) is returned. | |
93 | ||
94 | If the result overflows, | |
efe294cb | 95 | a range error occurs, |
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96 | and the functions return |
97 | .BR HUGE_VAL , | |
98 | .BR HUGE_VALF , | |
99 | or | |
100 | .BR HUGE_VALL , | |
101 | respectively, with the same sign as | |
102 | .IR x . | |
103 | .\" | |
385cf745 | 104 | .\" POSIX.1-2001 documents an optional range error (underflow) |
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105 | .\" for subnormal x; |
106 | .\" glibc 2.8 does not do this. | |
107 | .SH ERRORS | |
108 | See | |
109 | .BR math_error (7) | |
110 | for information on how to determine whether an error has occurred | |
111 | when calling these functions. | |
112 | .PP | |
113 | The following errors can occur: | |
114 | .TP | |
115 | Range error: result overflow | |
116 | .I errno | |
117 | is set to | |
118 | .BR ERANGE . | |
119 | An overflow floating-point exception | |
120 | .RB ( FE_OVERFLOW ) | |
121 | is raised. | |
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122 | .SH ATTRIBUTES |
123 | For an explanation of the terms used in this section, see | |
124 | .BR attributes (7). | |
125 | .TS | |
126 | allbox; | |
127 | lbw24 lb lb | |
128 | l l l. | |
129 | Interface Attribute Value | |
130 | T{ | |
131 | .BR sinh (), | |
132 | .BR sinhf (), | |
133 | .BR sinhl () | |
134 | T} Thread safety MT-Safe | |
135 | .TE | |
47297adb | 136 | .SH CONFORMING TO |
9a74e018 | 137 | C99, POSIX.1-2001, POSIX.1-2008. |
e05e3635 | 138 | |
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139 | The variant returning |
140 | .I double | |
141 | also conforms to | |
68e1685c | 142 | SVr4, 4.3BSD, C89. |
47297adb | 143 | .SH SEE ALSO |
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144 | .BR acosh (3), |
145 | .BR asinh (3), | |
146 | .BR atanh (3), | |
147 | .BR cosh (3), | |
36268806 | 148 | .BR csinh (3), |
fea681da | 149 | .BR tanh (3) |