float sinhf( float arg );
(1) (since C99)double sinh( double arg );
(2)long double sinhl( long double arg );
(3) (since C99)#define sinh( arg )
(4) (since C99)1-3) Computes hyperbolic sine of arg.
4)Type-generic macro: If the argument has type
long double,
sinhl
is called. Otherwise, if the argument has integer type or the type
double,
sinh
is called. Otherwise,
sinhf
is called. If the argument is complex, then the macro invokes the corresponding complex function (
csinhf,
csinh,
csinhl).
[edit] Parameters arg - floating-point value representing a hyperbolic angle [edit] Return valueIf no errors occur, the hyperbolic sine of
arg(
sinh(arg), or
) is returned.
If a range error due to overflow occurs, ±HUGE_VAL, ±HUGE_VALF, or ±HUGE_VALL is returned.
If a range error occurs due to underflow, the correct result (after rounding) is returned.
[edit] Error handlingErrors are reported as specified in math_errhandling.
If the implementation supports IEEE floating-point arithmetic (IEC 60559),
POSIX specifies that in case of underflow, arg is returned unmodified, and if that is not supported, an implementation-defined value no greater than DBL_MIN, FLT_MIN, and LDBL_MIN is returned.
[edit] Example#include <errno.h>
#include <fenv.h>
#include <math.h>
#include <stdio.h>
// #pragma STDC FENV_ACCESS ON
int main(void)
{
printf("sinh(1) = %f\nsinh(-1)=%f\n", sinh(1), sinh(-1));
printf("log(sinh(1) + cosh(1))=%f\n", log(sinh(1) + cosh(1)));
// special values
printf("sinh(+0) = %f\nsinh(-0)=%f\n", sinh(0.0), sinh(-0.0));
// error handling
errno = 0; feclearexcept(FE_ALL_EXCEPT);
printf("sinh(710.5) = %f\n", sinh(710.5));
if (errno == ERANGE)
perror(" errno == ERANGE");
if (fetestexcept(FE_OVERFLOW))
puts(" FE_OVERFLOW raised");
}
Possible output:
sinh(1) = 1.175201
sinh(-1)=-1.175201
log(sinh(1) + cosh(1))=1.000000
sinh(+0) = 0.000000
sinh(-0)=-0.000000
sinh(710.5) = inf
errno == ERANGE: Numerical result out of range
FE_OVERFLOW raised[edit] References
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