sinh(3) - f38

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

6       sinh, sinhf, sinhl - hyperbolic sine function
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LIBRARY

9       Math library (libm, -lm)
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SYNOPSIS

12       #include <math.h>
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14       double sinh(double x);
15       float sinhf(float x);
16       long double sinhl(long double x);
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18   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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20       sinhf(), sinhl():
21           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
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 hyperbolic sine of x, which is defined math‐
27       ematically as:
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29           sinh(x) = (exp(x) - exp(-x)) / 2
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RETURN VALUE

32       On success, these functions return the hyperbolic sine of x.
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34       If x is a NaN, a NaN is returned.
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36       If x is +0 (-0), +0 (-0) is returned.
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38       If x is positive infinity (negative infinity), positive infinity (nega‐
39       tive infinity) is returned.
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41       If the result overflows, a range error occurs, and the functions return
42       HUGE_VAL, HUGE_VALF, or HUGE_VALL, respectively, with the same sign  as
43       x.
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ERRORS

46       See  math_error(7) for information on how to determine whether an error
47       has occurred when calling these functions.
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49       The following errors can occur:
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51       Range error: result overflow
52              errno is set to ERANGE.  An  overflow  floating-point  exception
53              (FE_OVERFLOW) is raised.
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ATTRIBUTES

56       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
57       tributes(7).
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59       ┌────────────────────────────────────────────┬───────────────┬─────────┐
60       │Interface                                   │ Attribute     │ Value   │
61       ├────────────────────────────────────────────┼───────────────┼─────────┤
62       │sinh(), sinhf(), sinhl()                    │ Thread safety │ MT-Safe │
63       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

66       C11, POSIX.1-2008.
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HISTORY

69       C99, POSIX.1-2001.
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71       The variant returning double also conforms to SVr4, 4.3BSD, C89.
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