matlab:将十六进制值的字符串转换为十进制值？

Question

我编写了将100,000个十六进制字符串转换为值的函数,但是在整个数组上执行需要10秒.Matlab是否具有执行此操作的功能,因此它更快,...即:阵列不到1秒？

---

function x = hexstring2dec(s)
[m n] = size(s);

x = zeros(1, m);
for i = 1 : m
    for j = n : -1 : 1
       x(i) = x(i) + hexchar2dec(s(i, j)) * 16 ^ (n - j);
    end
end

---

function x =  hexchar2dec(c)

if c >= 48 && c <= 57
    x = c - 48;
elseif c >= 65 && c <= 70
    x = c - 55;
elseif c >= 97 && c <= 102
    x = c - 87;
end

Answer 1

尝试使用hex2dec.它应该比循环每个字符更快更快.