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411 समाचार
Public archive edition · Attributed source reporting with original dates · AI drafts are excluded

411 REFERENCE · Wikibooks

Linear Algebra and the C Language/a071

Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.

__NOTOC__ Install and compile this file in your working directory. /* ------------------------------------ */ /* Save as: c00c.c */ /* ------------------------------------ */ #include "v_a.h" /* ------------------------------------ */ #define Cb C4 /* ------------------------------------ */ void fun(int r) { double **A = r_mR( i_mR(r,r),999); double **b = r_mR( i_mR(r,Cb),999); double **Ab = c_A_b_Ab_mR(A,b, i_Abr_Ac_bc_mR(r,r,Cb)); clrscrn(); printf(" A:"); p_mR(A, S8,P0,C4); printf(" b1 b2 ... bn:"); p_mR(b, S8,P0,C4); stop(); clrscrn(); printf(" Copy/Paste into the octave window.\n\n"); p_Octave_mR(Ab,"Ab",P0); printf(" rref(Ab,.00000000001)\n\n"); printf(" gj_TP_mR(Ab):"); p_mR(gj_TP_mR(Ab), S10,P4,C4); f_mR(Ab); f_mR(b); f_mR(A); } /* ------------------------------------ */ int main(void) { time_t t; srand(time(&t)); do { fun(RC4); } while(stop_w()); return 0; } /* ------------------------------------ */ /* ------------------------------------ */ Screen output example: A: +64 +279 +379 -685 +690 -251 -783 -419 -916 -524 +731 +631 +796 +133 +162 -44 b1 b2 ... bn: -826 +468 -599 +507 +386 +492 -347 +929 +383 +982 +136 +135 +282 +723 -710 -824 Press return to continue. Copy/Paste into the octave window. Ab=[ +64,+279,+379,-685,-826,+468,-599,+507; +690,-251,-783,-419,+386,+492,-347,+929; -916,-524,+731,+631,+383,+982,+136,+135; +796,+133,+162,-44,+282,+723,-710,-824] rref(Ab,.00000000001) gj_TP_mR(Ab): +1.0000 +0.0000 -0.0000 -0.0000 -0.0000 +1.0000 +0.0000 -0.0000 +0.0000 +0.0000 +1.0000 +0.0000 -0.0000 +0.0000 -0.0000 +1.0000 +0.5792 +0.9838 -0.8085 -0.7737 -0.9303 -2.5060 +0.7376 -1.5837 -0.1202 +1.4694 -0.8441 -0.4480 +0.8145 -0.7990 +0.6323 -1.7053 Press return to continue Press X return to stop