Returns the sine of the argument. The argument is an angle in radians.
math:sin
( $θ
as xs:double?
xs:double?
If $
θ is the empty sequence, the function returns the empty
sequence.
Otherwise the result is the sine of $
θ (which is treated as an angle in
radians) as defined in the specification of the
sin
function applied to 64-bit binary floating point values.
The expression math:sin(())
returns ()
.
The expression math:sin(0)
returns 0.0e0
.
The expression math:sin(-0.0e0)
returns -0.0e0
.
The expression math:sin(math:pi() div 2)
returns 1.0e0
.
The expression math:sin(-math:pi() div 2)
returns -1.0e0
.
The expression math:sin(math:pi())
returns 0.0e0
.
The expression math:sin(xs:double('NaN'))
returns xs:double('NaN')
.
The expression math:sin(xs:double('INF'))
returns xs:double('NaN')
.
The expression math:sin(xs:double('-INF'))
returns xs:double('NaN')
.
The treatment of the invalidOperation
and underflow
exceptions
is defined in .
If $
θ is positive or negative zero, the result is
$
θ.
If $
θ is positive or negative infinity, or NaN
,
then the result is NaN
.
Otherwise the result is always in the range -1.0e0 to +1.0e0