LDNN/vector.c at master · glor/LDNN · GitHub

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#include"vector.h"

void vector_print(vector_t v) {
	printf("(");
	for(int i=0; i<settings.DIM; i++)
		printf("%lf ", v[i]);
	puts(")");
}

void vector_copy(vector_t src, vector_t dest) {
	for(int i=0; i<settings.DIM; i++)
		dest[i] = src[i];
}

void vector_scale(vector_t v, PRECISION s) {
	for(int i=0; i<settings.DIM; i++)
		v[i] *= s;
}

void vector_normalize(vector_t v) {
	vector_scale(v, vector_length(v));
}


PRECISION vector_length(vector_t v) {
	PRECISION sum = 0;
	for(int i=0; i<settings.DIM; i++) {
		sum += v[i] * v[i];
	}
	return sqrt(sum);
}

PRECISION vector_scalar_prod(vector_t x, vector_t y) {
	PRECISION sum = 0;
	for(int i=0; i<settings.DIM; i++) {
		sum += x[i]*y[i];
	}
	return sum;
}

vector_t vector_add(vector_t x, vector_t y) {
	for(int i=0; i<settings.DIM; i++) {
		x[i] += y[i];
	}
	return x;
}
vector_t vector_sub(vector_t x, vector_t y) {
	for(int i=0; i<settings.DIM; i++) {
		x[i] -= y[i];
	}
	return x;
}