OpenBLAS/utest/test_dnrm2.c

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#include "openblas_utest.h"
#if defined(BUILD_DOUBLE)

#ifndef INFINITY
#define INFINITY HUGE_VAL
#endif

CTEST(dnrm2,dnrm2_inf)
{
	int i;
	double x[29];
	blasint incx=1;
	blasint n=28;
	double res1=0.0f, res2=INFINITY;

	for (i=0;i<n;i++)x[i]=0.0f;
	x[10]=-INFINITY;
	res1=BLASFUNC(dnrm2)(&n, x, &incx);
	ASSERT_DBL_NEAR_TOL(res2, res1, DOUBLE_EPS);

}
CTEST(dnrm2,dnrm2_tiny)
{
	int i;
	double x[29];
	blasint incx=1;
	blasint n=28;
	double res1=0.0f, res2=0.0f;

	for (i=0;i<n;i++)x[i]=7.457008414e-310;
	res1=BLASFUNC(dnrm2)(&n, x, &incx);
	ASSERT_DBL_NEAR_TOL(res2, res1, DOUBLE_EPS);
}
#endif