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23 lines
555 B
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23 lines
555 B
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.. highlight:: c
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.. _predef_expression:
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Predefined Expressions
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-------------------------------------------------
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- Using predefined expressions :
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- matmul
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The code::
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matrix<double> M1(2,2), M2(2,2), M3;
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M3 = matmul(M1,M2);
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will do the following :
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- matmul returns a lazy object modelling the :ref:`Expression` concept.
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- a result this is compiled as some `matmul_with_lapack(M1,M2,M3)` : **there is NO intermediate copy**.
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- mat_vec_mul
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