s_roundl.c (153017) | s_roundl.c (257770) |
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1/*- 2 * Copyright (c) 2003, Steven G. Kargl 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003, Steven G. Kargl 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
28__FBSDID("$FreeBSD: head/lib/msun/src/s_roundl.c 153017 2005-12-02 13:45:06Z bde $"); | 28__FBSDID("$FreeBSD: head/lib/msun/src/s_roundl.c 257770 2013-11-06 23:44:52Z kargl $"); |
29 | 29 |
30#include <math.h> | 30#include <float.h> 31#ifdef __i386__ 32#include <ieeefp.h> 33#endif |
31 | 34 |
35#include "fpmath.h" 36#include "math.h" 37#include "math_private.h" 38 |
|
32long double 33roundl(long double x) 34{ 35 long double t; | 39long double 40roundl(long double x) 41{ 42 long double t; |
43 uint16_t hx; |
|
36 | 44 |
37 if (!isfinite(x)) 38 return (x); | 45 GET_LDBL_EXPSIGN(hx, x); 46 if ((hx & 0x7fff) == 0x7fff) 47 return (x + x); |
39 | 48 |
40 if (x >= 0.0) { | 49 ENTERI(); 50 51 if (!(hx & 0x8000)) { |
41 t = floorl(x); | 52 t = floorl(x); |
42 if (t - x <= -0.5) 43 t += 1.0; 44 return (t); | 53 if (t - x <= -0.5L) 54 t += 1; 55 RETURNI(t); |
45 } else { 46 t = floorl(-x); | 56 } else { 57 t = floorl(-x); |
47 if (t + x <= -0.5) 48 t += 1.0; 49 return (-t); | 58 if (t + x <= -0.5L) 59 t += 1; 60 RETURNI(-t); |
50 } 51} | 61 } 62} |