'\" te
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.TH sinh 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions"
.SH NAME
sinh, sinhf, sinhl \- hyperbolic sine function
.SH SYNOPSIS
.LP
.nf
c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ]
#include <math.h>

\fBdouble\fR \fBsinh\fR(\fBdouble\fR \fIx\fR);
.fi

.LP
.nf
\fBfloat\fR \fBsinhf\fR(\fBfloat\fR \fIx\fR);
.fi

.LP
.nf
\fBlong double\fR \fBsinhl\fR(\fBlong double\fR \fIx\fR);
.fi

.SH DESCRIPTION
.sp
.LP
These functions compute the hyperbolic sine of \fIx\fR.
.SH RETURN VALUES
.sp
.LP
Upon successful completion, these functions return the hyperbolic sine of
\fIx\fR.
.sp
.LP
If the result would cause an overflow, a range error occurs and
\(+-\fBHUGE_VAL\fR, \(+-\fBHUGE_VALF\fR, and \(+-\fBHUGE_VALL\fR (with the same
sign as \fIx\fR) is returned as appropriate for the type of the function.
.sp
.LP
If \fIx\fR is NaN, a NaN is returned.
.sp
.LP
If \fIx\fR is \(+-0 or \(+-Inf, \fIx\fR is returned.
.sp
.LP
For exceptional cases, \fBmatherr\fR(3M) tabulates the values to be returned by
\fBacos()\fR as specified by SVID3 and XPG3.
.SH ERRORS
.sp
.LP
These functions will fail if:
.sp
.ne 2
.mk
.na
\fBRange Error\fR
.ad
.RS 15n
.rt  
The result would cause an overflow.
.sp
If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is
non-zero, the overflow floating-point exception is raised.
.sp
The \fBasinh()\fR function sets \fBerrno\fR to \fBERANGE\fR if the result would
cause an overflow.
.RE

.SH USAGE
.sp
.LP
An application wanting to check for exceptions should call
\fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On
return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR |
\fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) 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.
.sp
.LP
An application can also set \fBerrno\fR to 0 before calling \fBasinh()\fR. On
return, if \fBerrno\fR is non-zero, an error has occurred. The \fBasinhf()\fR
and \fBasinhl()\fR functions do not set \fBerrno\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityStandard
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBasinh\fR(3M), \fBcosh\fR(3M), \fBfeclearexcept\fR(3M),
\fBfetestexcept\fR(3M), \fBisnan\fR(3M), \fBmath.h\fR(3HEAD),
\fBmatherr\fR(3M), \fBtanh\fR(3M), \fBattributes\fR(5), \fBstandards\fR(5)