求助：帮我看看哪出错了？

[lxl723]

小弟想用embeded matlab function 模块，里面代码如下：
function[p,v,h,s]=tx(t,x)

p=psaturation(t);
[vwater,hwater,swater]=ptwater(p,t);
[vsteam,hsteam,ssteam]=ptsteam(p,t);
v=vwater+x*(vsteam-vwater);
h=hwater+x*(hsteam-hwater);
s=swater+x*(ssteam-swater);

其中p=psaturation(t);
vwater,hwater,swater]=ptwater(p,t);
[vsteam,hsteam,ssteam]=ptsteam(p,t);
是三个M函数，运行时正确无误，但当运行这个embeded matlab function 模块时出现以下错误：
1，Expected either a logical, char, single, or double.
Found an mxArray. mxArrays are returned from calls to the MATLAB interpreter and are not supported inside expressions. They may be used on the right-hand side of assignments and as arguments to MATLAB calls.

Function 'tx' (#82.131.137), line 6, column 13:
"vsteam"
2，Expected either a logical, char, single, or double.
Found an mxArray. mxArrays are returned from calls to the MATLAB interpreter and are not supported inside expressions. They may be used on the right-hand side of assignments and as arguments to MATLAB calls.

Function 'tx' (#82.159.165), line 7, column 13:
"hsteam"

3，Expected either a logical, char, single, or double.
Found an mxArray. mxArrays are returned from calls to the MATLAB interpreter and are not supported inside expressions. They may be used on the right-hand side of assignments and as arguments to MATLAB calls.

Function 'tx' (#82.187.193), line 8, column 13:
"ssteam"
4，Errors occurred during parsing of Embedded MATLAB function 'tx'(#82)
5，Embedded MATLAB Interface Error: Port width mismatch. Input port "x"(#89) expects a scalar. The signal is a one dimensional vector with 1 elements.

不知道是不是能这样调用函数的原因？望高手解答下！先谢谢了！

[xiaoyaoshanzi]

在应用函数时应该
p=@psaturation(t);、、、、、、、

[lxl723]

首先谢谢楼上的回答，我试了下，还是报错，不过已找到解决办法，即把调用函数的代码写在此模块里就没有问题，和C的用法很相似。