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libc.a reference
sinh
Syntax
 #include <math.h>
double sinh(double x);

Description
This function computes the hyperbolic sine of x.
Return Value
The hyperbolic sine of x. If the absolute value of x is
finite but so large that the result would overflow a double
, the
return value is Inf
with the same sign as x, and
errno
is set to ERANGE
. If x is either a positive
or a negative infinity, the result is +Inf
with the same sign as
x, and errno
is not changed. If x is NaN
, the
return value is NaN
and errno
is set to EDOM
.
Portability
ANSI/ISO C 
C89; C99

POSIX 
1003.21992; 1003.12001
