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&ascii
— ASCII characters
&cset
— all characters
&digits
— digits
&lcase
— lowercase letters
&letters
— letters
&ucase
— uppercase letters
cset
— convert to cset
x++x
— compute cset or set union
x––x
— compute cset or set difference
x∗∗x
— cset or set intersection
~c1
— compute cset complement
Index of Function Types:
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Index of Subsystems:
base
digitcnt.icn
SNOBOL4 functions
base
—
math
tan
compute tangent
Description
r2 tan(r1)
tan
(
r1
) produces the tangent of
r1
radians
.
Parameters
r1
angle in
radians
, not π/2
returns
tangent of
r1
Errors
102
r1
is not
real
204
r1
singular point of tangent
See Also
atan
— compute arc tangent