1 /* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
2  * Use of this source code is governed by a BSD-style license that can be
3  * found in the LICENSE file.
4  */
5 
6 #include <fenv.h>
7 #include <float.h>
8 #include <stdio.h>
9 #include "dsp_test_util.h"
10 
dsp_util_has_denormal()11 int dsp_util_has_denormal()
12 {
13 	float x = 1;
14 	while (x >= FLT_MIN)
15 		x /= 2;
16 	return x > 0;
17 }
18 
dsp_util_clear_fp_exceptions()19 void dsp_util_clear_fp_exceptions()
20 {
21 	feclearexcept(FE_ALL_EXCEPT);
22 }
23 
dsp_util_print_fp_exceptions()24 void dsp_util_print_fp_exceptions()
25 {
26 	int excepts = fetestexcept(FE_ALL_EXCEPT);
27 	printf("floating-point exceptions: ");
28 	if (excepts & FE_DIVBYZERO)
29 		printf("FE_DIVBYZERO ");
30 	if (excepts & FE_INVALID)
31 		printf("FE_INVALID ");
32 	if (excepts & FE_OVERFLOW)
33 		printf("FE_OVERFLOW ");
34 	if (excepts & FE_UNDERFLOW)
35 		printf("FE_UNDERFLOW ");
36 	printf("\n");
37 }
38