uminus

Negate elements of fi object array

Syntax

uminus(a)

uminus(a) is called for the syntax -a when a is an object. -a negates the elements of a.

uminus does not support fi objects of data type Boolean.

When wrap occurs, -(-1) = -1 :

fipref('NumericTypeDisplay','short', ...
       'fimathDisplay','none');
format short g
a = fi(-1,true,8,7,'OverflowMode','wrap')

a = 

    -1
      numerictype(1,8,7)

-a

ans = 

    -1
      numerictype(1,8,7)

b = fi([-1-i -1-i],true,8,7,'OverflowMode','wrap')

b = 

           -1 -          1i           -1 -          1i
      numerictype(1,8,7)

-b

ans = 

           -1 -          1i           -1 -          1i
      numerictype(1,8,7)

b'

ans = 

           -1 -          1i
           -1 -          1i
      numerictype(1,8,7)

When saturation occurs, -(-1) = 0.99... :

c = fi(-1,true,8,7,'OverflowMode','saturate')

c = 

    -1
      numerictype(1,8,7)

-c

ans = 

      0.99219
      numerictype(1,8,7)

d = fi([-1-i -1-i],true,8,7,'OverflowMode','saturate')

d = 

           -1 -          1i           -1 -          1i
      numerictype(1,8,7)

-d

ans = 

      0.99219 +    0.99219i      0.99219 +    0.99219i
      numerictype(1,8,7)

d'

ans = 

           -1 +    0.99219i
           -1 +    0.99219i
      numerictype(1,8,7)

Introduced before R2006a