isnanΒΆ
isnan checks if the argument is not a number (NaN). For example 0/0.
-
r = isnan(m)
Return Value
r is TRUE (1) if m is NaN, otherwise it is FALSE (0).
Parameters
-
m
m is a real scalar or real matrix.
Example
1/0
1.#INF
0/0
-1.#IND
isinf(1/0)
1.0000
isinf(0/0)
1.0000
isnan(1/0)
0.0000
isnan(0/0)
1.0000
isnan(0/0)
1.0000
isnan(1e300*1e300)
1.0000
isnan(-1e300*-1e300)
1.0000
See also
id-401091