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man pages section 3: Extended Library Functions, Volume 2

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Updated: Thursday, June 13, 2019
 
 

sinhl(3M)

Name

sinh, sinhf, sinhl - hyperbolic sine function

Synopsis

c99 [ flag... ] file... –lm [ library... ]
#include <math.h>

double sinh(double x);
float sinhf(float x);
long double sinhl(long double x);

Description

These functions compute the hyperbolic sine of x.

Return Values

Upon successful completion, these functions return the hyperbolic sine of x.

If the result would cause an overflow, a range error occurs and ±HUGE_VAL, ±HUGE_VALF, and ±HUGE_VALL (with the same sign as x) is returned as appropriate for the type of the function.

If x is NaN, a NaN is returned.

If x is ±0 or ±Inf, x is returned.

For exceptional cases, matherr(3M) tabulates the values to be returned by acos() as specified by SVID3 and XPG3.

Errors

These functions will fail if:

Range Error

The result would cause an overflow.

If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the overflow floating-point exception is raised.

The asinh() function sets errno to ERANGE if the result would cause an overflow.

Usage

An application wanting to check for exceptions should call feclearexcept(FE_ALL_EXCEPT) before calling these functions. On return, if fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is non-zero, an exception has been raised. An application should either examine the return value or check the floating point exception flags to detect exceptions.

An application can also set errno to 0 before calling asinh(). On return, if errno is non-zero, an error has occurred. The asinhf() and asinhl() functions do not set errno.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed
Availability
system/library/math
MT-Level
MT-Safe
Standard

See Also

isnan(3M), math.h(3HEAD), feclearexcept(3M), asinh(3M), cosh(3M), fetestexcept(3M), matherr(3M), tanh(3M), attributes(7), standards(7)