/* nag_rand_exp_mix (g05sgc) Example Program. * * Copyright 2008, Numerical Algorithms Group. * * Mark 9, 2009. */ /* Pre-processor includes */ #include #include #include #include #include int main(void) { /* Integer scalar and array declarations */ Integer exit_status = 0; Integer i, lstate; Integer *state = 0; /* NAG structures */ NagError fail; /* Double scalar and array declarations */ double *x = 0; /* Set the distribution parameters */ Integer nmix = 3; double a[] = { 1.0e0, 5.0e0, 2.0e0 }; double wgt[] = { 0.50e0, 0.30e0, 0.20e0 }; /* Set the sample size */ Integer n = 5; /* Choose the base generator */ Nag_BaseRNG genid = Nag_Basic; Integer subid = 0; /* Set the seed */ Integer seed[] = { 1762543 }; Integer lseed = 1; /* Initialise the error structure */ INIT_FAIL(fail); printf("nag_rand_exp_mix (g05sgc) Example Program Results\n\n"); /* Get the length of the state array */ lstate = -1; nag_rand_init_repeatable(genid, subid, seed, lseed, state, &lstate, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_rand_init_repeatable (g05kfc).\n%s\n", fail.message); exit_status = 1; goto END; } /* Allocate arrays */ if (!(x = NAG_ALLOC(n, double)) || !(state = NAG_ALLOC(lstate, Integer))) { printf("Allocation failure\n"); exit_status = -1; goto END; } /* Initialise the generator to a repeatable sequence */ nag_rand_init_repeatable(genid, subid, seed, lseed, state, &lstate, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_rand_init_repeatable (g05kfc).\n%s\n", fail.message); exit_status = 1; goto END; } /* Generate the variates*/ nag_rand_exp_mix(n, nmix, a, wgt, state, x, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_rand_exp_mix (g05sgc).\n%s\n", fail.message); exit_status = 1; goto END; } /* Display the variates*/ for (i = 0; i < n; i++) printf("%10.4f\n", x[i]); END: if (x) NAG_FREE(x); if (state) NAG_FREE(state); return exit_status; }