【matlab】双精度每字符占8字节，单精度每字符占4字节

>> help magicmagic - Magic square    This MATLAB function returns an n-by-n matrix constructed from the integers 1    through n^2 with equal row and column sums.    M = magic(n)    magic 的参考页    另请参阅 ones, rand>> a = magic(4)a =    16     2     3    13     5    11    10     8     9     7     6    12     4    14    15     1>> whos a  Name      Size            Bytes  Class     Attributes  a         4x4               128  double              >> b = single(a)b =    16     2     3    13     5    11    10     8     9     7     6    12     4    14    15     1>> whos b  Name      Size            Bytes  Class     Attributes  b         4x4                64  single