1/* e_hypotf.c -- float version of e_hypot.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16#include <math.h>
17#include <math_private.h>
18#include <libm-alias-finite.h>
19
20float
21__ieee754_hypotf(float x, float y)
22{
23 double d_x, d_y;
24 int32_t ha, hb;
25
26 GET_FLOAT_WORD(ha,x);
27 ha &= 0x7fffffff;
28 GET_FLOAT_WORD(hb,y);
29 hb &= 0x7fffffff;
30 if (ha == 0x7f800000 && !issignaling (y))
31 return fabsf(x);
32 else if (hb == 0x7f800000 && !issignaling (x))
33 return fabsf(y);
34 else if (ha > 0x7f800000 || hb > 0x7f800000)
35 return fabsf(x) * fabsf(y);
36 else if (ha == 0)
37 return fabsf(y);
38 else if (hb == 0)
39 return fabsf(x);
40
41 d_x = (double) x;
42 d_y = (double) y;
43
44 return (float) sqrt(d_x * d_x + d_y * d_y);
45}
46#ifndef __ieee754_hypotf
47libm_alias_finite (__ieee754_hypotf, __hypotf)
48#endif
49