C++ (Cpp) auryn_vector_float_ptr Examples

Example #1

File: IF2Group.cpp Project: eneftci/auryn

void IF2Group::integrate_nonlinear_nmda_synapses()
{
	// decay of ampa and gaba channel, i.e. multiply by exp(-dt/tau)
    auryn_vector_float_scale(scale_ampa,g_ampa);
    auryn_vector_float_scale(scale_gaba,g_gaba);

    // compute dg_nmda = (g_ampa-g_nmda)*dt/tau_nmda and add to g_nmda
	AurynFloat mul_nmda = dt/tau_nmda;
    auryn_vector_float_saxpy(mul_nmda,g_ampa,g_nmda);
	auryn_vector_float_saxpy(-mul_nmda,g_nmda,g_nmda);

	// BEGIN implement NMDA voltage dependence
	auryn_vector_float_copy( mem, nmda_opening);
	auryn_vector_float_add_constant( nmda_opening , -e_nmda_onset );
	auryn_vector_float_scale( nmda_slope, nmda_opening );
	for ( AurynState * ptr = auryn_vector_float_ptr( nmda_opening , 0 ) ; ptr != auryn_vector_float_ptr( nmda_opening , get_post_size()-1 )+1 ; ++ptr ) {
		AurynFloat x = *ptr;
		AurynFloat x2 = x*x;
		AurynFloat r = x2/(1.0+x2);
		if (x>0) *ptr = r; // rectification
		else *ptr = 0;
		// cout << *ptr << endl;
	}
	// END implement NMDA voltage dependence
	
    // excitatory
    auryn_vector_float_copy(g_nmda,t_exc);
    auryn_vector_float_scale(-A_nmda,t_exc);
	auryn_vector_float_mul(t_exc,nmda_opening);
    auryn_vector_float_saxpy(-A_ampa,g_ampa,t_exc);
    auryn_vector_float_mul(t_exc,mem);
    
    // inhibitory
    auryn_vector_float_copy(mem,t_inh);
    auryn_vector_float_add_constant(t_inh,-e_rev);
    auryn_vector_float_mul(t_inh,g_gaba);
}

Example #2

File: TIFGroup.cpp Project: pgleeson/auryn

void TIFGroup::init()
{
	e_rest = -60e-3;
	e_rev = -80e-3;
	thr = -50e-3;
	tau_ampa = 5e-3;
	tau_gaba = 10e-3;
	tau_mem = 20e-3;
	set_refractory_period(5e-3);

	calculate_scale_constants();
	
	ref = auryn_vector_ushort_alloc (get_vector_size()); 
	bg_current = get_state_vector("bg_current");

	t_g_ampa = auryn_vector_float_ptr ( g_ampa , 0 ); 
	t_g_gaba = auryn_vector_float_ptr ( g_gaba , 0 ); 
	t_bg_cur = auryn_vector_float_ptr ( bg_current , 0 ); 
	t_mem = auryn_vector_float_ptr ( mem , 0 ); 
	t_ref = auryn_vector_ushort_ptr ( ref , 0 ); 

	clear();

}