misc.c

来自「留一模型选择法leave-one-out model selection」· C语言 代码 · 共 21 行

#include <math.h>

double mymax(double a, double b)
{
	if (a > b)
		return a;
	return b;
}
double mymin(double a, double b)
{
	if (a < b)
		return a;
	return b;	
}
double sign(double a, double b)
{
	if (b >= 0)
		return fabs(a);
	return -fabs(a);
}