1CASINH(3) Linux Programmer's Manual CASINH(3)
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6 casinh, casinhf, casinhl - complex arc sine hyperbolic
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9 #include <complex.h>
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11 double complex casinh(double complex z);
12 float complex casinhf(float complex z);
13 long double complex casinhl(long double complex z);
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15 Link with -lm.
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18 These functions calculate the complex arc hyperbolic sine of z. If
19 y = casinh(z), then z = csinh(y). The imaginary part of y is chosen in
20 the interval [-pi/2,pi/2].
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22 One has:
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24 casinh(z) = clog(z + csqrt(z * z + 1))
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27 These functions first appeared in glibc in version 2.1.
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30 For an explanation of the terms used in this section, see at‐
31 tributes(7).
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33 ┌────────────────────────────────────────────┬───────────────┬─────────┐
34 │Interface │ Attribute │ Value │
35 ├────────────────────────────────────────────┼───────────────┼─────────┤
36 │casinh(), casinhf(), casinhl() │ Thread safety │ MT-Safe │
37 └────────────────────────────────────────────┴───────────────┴─────────┘
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40 C99, POSIX.1-2001, POSIX.1-2008.
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43 asinh(3), cabs(3), cimag(3), csinh(3), complex(7)
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46 This page is part of release 5.13 of the Linux man-pages project. A
47 description of the project, information about reporting bugs, and the
48 latest version of this page, can be found at
49 https://www.kernel.org/doc/man-pages/.
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53 2021-03-22 CASINH(3)