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411 समाचार
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411 REFERENCE · Wikibooks

Linear Algebra and the C Language/a0dn

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__NOTOC__ Install and compile this file in your working directory. /* ------------------------------------ */ /* Save as : c00b.c */ /* ------------------------------------ */ #include "v_a.h" /* ------------------------------------ */ #define RB R4 #define CB C2 /* ------------------------------------ */ int main(void) { double b[RB*CB]={ -3.00,+3.00, +6.00,+8.00, +8.00,-9.00, -1.00,-4.00 }; double **B = ca_A_mR(b, i_mR(RB,CB)); double **B_T = transpose_mR(B, i_mR(CB,RB)); double **S = svds_mR(B, i_mR(CB,C1)); double **U = svd_U_Rn_mR(B_T, i_mR(RB,CB)); double **V = svd_V_Rn_mR(B_T, i_mR(CB,CB)); clrscrn(); printf(" Copy/Paste into the octave windows \n\n\n"); p_Octave_mR(B,"B",P2); printf(" [U, S, V] =svd (B,10)\n\n\n"); stop(); clrscrn(); printf(" U :"); p_mR(U,S5,P5,C10); printf(" S :"); p_mR(S,S5,P5,C10); printf(" V:"); p_mR(V,S5,P5,C10); stop(); f_mR(B_T); f_mR(B); f_mR(S); f_mR(U); f_mR(V); return 0; } /* ------------------------------------ */ /* ------------------------------------ */ Screen output example: Copy/Paste into the octave windows B=[ -3.00,+3.00; +6.00,+8.00; +8.00,-9.00; -1.00,-4.00] [U, S, V] =svd (B,10) Press return to continue. U : -0.28974 -0.16712 -0.38334 +0.86361 +0.84140 +0.40785 +0.24728 -0.24477 S : +13.48055 +9.91336 V: -0.37484 +0.92709 +0.92709 +0.37484 Press return to continue.