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sinh |
Portability: | ISO/ANSI C conforming, UNIX compatible |
SYNOPSIS | |
DESCRIPTION | |
RETURN VALUE | |
DIAGNOSTICS | |
EXAMPLE | |
RELATED FUNCTIONS | |
SEE ALSO |
SYNOPSIS |
#include <math.h> double sinh(double x);
DESCRIPTION |
sinh
computes the hyperbolic sine of its argument
x
, expressed by this relation:
RETURN VALUE |
sinh
returns the principal value of the hyperbolic sine of the argument
x
, if this value is defined and computable. The return value is a double-precision,
floating-point number.
DIAGNOSTICS |
For a positive value of
x
that is too large, the
sinh
function
returns
HUGE_VAL
. For a negative
x
value that is too large,
sinh
returns
-HUGE_VAL
. In both
cases, the run-time library writes an error message to
stderr
(the standard error file).
If an error occurs in
sinh
, the
_matherr
routine is called.
You can supply your own version of
_matherr
to suppress the diagnostic message or modify the value returned.
EXAMPLE |
This example computes the hyperbolic cosecant of a value:
#include <math.h> #include <stdio.h> #define YRANG 1.30 main() { double cosec_h; /* The hyperbolic cosecant of a value is 1 */ /* divided by the hyperbolic sine of the value. */ cosec_h = 1 / sinh(YRANG); printf("1 / sinh(%f) = %f\n", YRANG, cosec_h); }
RELATED FUNCTIONS |
SEE ALSO |
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