38 lines
742 B
C
38 lines
742 B
C
typedef struct Vector {
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double x1;
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double x2;
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} Vector;
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typedef struct Matrix {
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double a11;
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double a12;
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double a21;
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double a22;
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} Matrix;
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struct Matrix multiply(struct Matrix m1, struct Matrix m2) {
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Matrix r = {
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.a11 = m1.a11*m2.a11 + m1.a12*m2.a21,
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.a12 = m1.a11*m2.a12 + m1.a12*m2.a22,
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.a21 = m1.a21*m2.a11 + m1.a22*m2.a21,
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.a22 = m1.a21*m2.a12 + m1.a22*m2.a22
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};
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return r;
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};
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struct Vector multiply(struct Matrix m, struct Vector v) {
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Vector r = {
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.x1 = (m.a11*v.x1) + (m.a12*v.x2),
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.x2 = (m.a21*v.x1) + (m.a22*v.x2)
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};
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return r;
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}
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struct Vector add(struct Vector v1, struct Vector v2) {
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Vector r = {
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.x1 = v1.x1 + v2.x2,
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.x2 = v1.x2 + v2.x2
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};
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return r;
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}
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