cosh(), coshf() hyperbolic cosine function	Function
	SYNOPSIS DESCRIPTION PARAMETERS RETURN VALUES CONFORMANCE MULTITHREAD SAFETY LEVEL PORTING ISSUES AVAILABILITY SEE ALSO

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SYNOPSIS

#include <math.h>

double cosh(double x)

float coshf(float x)

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DESCRIPTION

The cosh() and coshf() functions compute the hyperbolic cosine of x.

To check for error situations, set errno to 0 before calling cosh(). If errno is non-zero on return, or the return value is NaN, an error has occurred.

The coshf() function is a single-precision version of cosh().

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PARAMETERS

x 

Is the value to derive the hyperbolic cosine from.

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RETURN VALUES

The cosh() function returns the hyperbolic cosine value.

If x is NaN, NaN is returned.

If the return value would overflow, then:

• In IEEE mode, NaN is returned.

• In POSIX mode, NaN is returned and errno is set to ERANGE.

• In SVID mode, HUGE is returned and matherr() is called.

• In XOPEN mode, infinity is returned and matherr() is called.

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CONFORMANCE

cosh(): ANSI/ISO 9899-1990

coshf(): PTC MKS Toolkit UNIX APIs extension

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MULTITHREAD SAFETY LEVEL

MT-Safe.

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PORTING ISSUES

None.

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AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

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SEE ALSO

Functions:

acos(), asin(), atan(), atan2(), cos(), math(), matherr(), sin(), sinh(), tan(), tanh()

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PTC MKS Toolkit 10.5 Documentation Build 40.