reduce.cpp

数值计算工具库,C语言编写的,可以直接调用.

#include "testsuite.h"
#include <blitz/array.h>

BZ_USING_NAMESPACE(blitz)

int main()
{
    Array<int,2> A(4,3);

    A = 0,  1, 2,
        3,  4, 5,
        6,  7, 8,
        9, 10, 11;

    BZTEST(sum(A) == 11*12/2);
    BZTEST(min(A) == 0);
    BZTEST(max(A) == 11);

    BZTEST(product(A) == 0);
    BZTEST(all(A >= 0));
    BZTEST(any(A == 7));

    BZTEST(sum(pow2(A)) == 506);

    BZ_USING_NAMESPACE(blitz::tensor);

    BZTEST(sum(min(A,j)) == 0+3+6+9);
    BZTEST(sum(max(A(j,i),j)) == 9+10+11);

    Array<int,1> B(6);
    B = 0, 1, 2, 3, 4, 5;

    BZTEST(sum(B) == 5*6/2);
    BZTEST(min(B) == 0);
    BZTEST(max(B) == 5);

    Array<int,3> C(2,2,2);
    C = 0, 1, 2, 3, 4, 5, 6, 7;

    BZTEST(sum(C) == 7*8/2);
    BZTEST(all(C) <= 7);
    BZTEST(any(C == 5));
    BZTEST(!any(C == 8));
    BZTEST(sum(C(k,j,i)) == 7*8/2);
    BZTEST(sum(C(j,k,i)) == 7*8/2);
    BZTEST(sum(sum(sum(C,k),j)) == 7*8/2);

    return 0;
}