Matlab中intmax簡介
函式功能： 返回指定整數類型所能表示的最大值。
調用格式：
v = intmax
返回matlab中32位正整數所能表示的正的最大值。
v = intmax('classname')
返回指定的整數類型所能表示的正的最大值。'classname'可以是：
'int8'、'int16'、'int32'、'int64'、'uint8'、'uint16'、'uint32'、'uint64'。
相關函式： intmin
程式示例
close all; clear; clc;
type_cell{1} = 'int';
type_cell{2} = 'uint';
bits = [8, 16, 32, 64];
for m = 1:2
for k = 1:4
type_str = strcat(type_cell{m}, num2str(bits(k)));
fprintf('The largest positive number ''%s'' can store is %s\n', ...
type_str, num2str(intmax(type_str)));
end
end
運行結果
The largest positive number 'int8' can store is 127
The largest positive number 'int16' can store is 32767
The largest positive number 'int32' can store is 2147483647
The largest positive number 'int64' can store is 9223372036854775800
The largest positive number 'uint8' can store is 255
The largest positive number 'uint16' can store is 65535
The largest positive number 'uint32' can store is 4294967295
The largest positive number 'uint64' can store is 18446744073709552000
上面這個程式列印出了matlab中各種整數類型所能表示的最大值。
