怎么样在VC++6里面使用MPFR
忘记问另外一个问题了。MPFR与GMP有什么不同啊，看不懂英文。哪个更加快点？哪个更加容易使用啊？
如果MPFR好用，希望有大牛教我一下怎么用MPFR。
唉，天天被密码搞得头晕啊。
matlab怎么不支持高精度整数啊，搞得我做密码实验还要跑到VC去，加完密还要再跑到matlab来，不知要怎么办！头快爆炸了。
PS：matlab要怎么样才读取GMP计算出来结果（全是大整数）啊？
谢谢各位大牛了。 matlab 支持高精度整数。 Are you sure?
我怎么找不到呢？
要怎么样才能用啊？用哪个函数？ 比如：
>> vpa('(1+sqrt(5))/2',20)
相关参考：
>> help vpa
VPA Variable precision arithmetic.
R = VPA(S) numerically evaluates each element of the double matrix
S using variable precision floating point arithmetic with D decimal
digit accuracy, where D is the current setting of DIGITS.
The resulting R is a SYM.
VPA(S,D) uses D digits, instead of the current setting of DIGITS.
D is an integer or the SYM representation of a number.
It is important to avoid the evaluation of an expression using double
precision floating point arithmetic before it is passed to VPA.
For example,
phi = vpa((1+sqrt(5))/2)
first computes a 16-digit approximation to the golden ratio, then
converts that approximation to one with d digits, where d is the current
setting of DIGITS.To get full precision, use unevaluated string or
symbolic arguments,
phi = vpa('(1+sqrt(5))/2')
or
s = sym('sqrt(5)')
phi = vpa((1+s)/2);
Additional examples:
vpa(pi,780) shows six consecutive 9's near digit 770 in the
decimal expansion of pi.
vpa(hilb(2),5) returns
[ 1., .50000]
[.50000, .33333]
See also double, digits. 可是如果我是要编一个加密算法，涉及到几千比特的整数的模加，模乘时，还能用vpa吗？ 2# G-Spider
准确地说，matlab7用gmp作为大数运算的内核。
向量、矩阵等运算用到atlas 、mkl、ipp、lapack等。
FFT用fftw3。
... 可以试试这个工具箱：
http://www.mathworks.com/matlabc ... -toolbox-for-matlab
http://www.thedigitalmap.com/~carlos/software/index.htm
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