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HP-UX 11i Version 3: February 2007

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asinh(), asinhf(), asinhl(), asinhw(), asinhq() — arc hyperbolic sine functions


#include <math.h>

double asinh(double x);

HP Integrity Server Only

float asinhf(float x);

long double asinhl(long double x);

extended asinhw(extended x);

quad asinhq(quad x);


asinh() returns the arc hyperbolic sine of x.

Integrity Server Only

asinhf() is a float version of asinh(); it takes a float argument and returns a float result.

asinhl() is a long double version of asinh(); it takes a long double argument and returns a long double result.

asinhw() is an extended version of asinh(); it takes an extended argument and returns an extended result.

asinhq() is equivalent to asinhl() on HP-UX systems.


To use (for Integrity servers) asinhf(), asinhl(), asinhw(), or asinhq(), compile either with the default -Ae option or with the -Aa and -D_HPUX_SOURCE options.

To use (for Integrity servers) asinhw() or asinhq(), compile also with the -fpwidetypes option.

To use any of these functions, make sure your program includes <math.h>, and link in the math library by specifying -lm on the compiler or linker command line.

For more information, see the HP-UX floating-point guide for HP Integrity servers at the following site: http://www.hp.com/go/fp.


asinh(0) returns 0.

If x is INFINITY, asinh() returns INFINITY respectively.

If x is NaN, asinh() returns NaN.

Whether asinh() raises the inexact exception is unspecified.


No errors are defined.


asinh(), asinhf(), asinhl() : ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'')

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