| s_exp2f.c (176231) | s_exp2f.c (176450) |
|---|---|
| 1/*- 2 * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG> 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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2005 David Schultz <das@FreeBSD.ORG> 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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/lib/msun/src/s_exp2f.c 176231 2008-02-13 10:44:44Z bde $"); | 28__FBSDID("$FreeBSD: head/lib/msun/src/s_exp2f.c 176450 2008-02-22 02:27:34Z das $"); |
| 29 30#include <float.h> 31 32#include "math.h" 33#include "math_private.h" 34 35#define TBLBITS 4 36#define TBLSIZE (1 << TBLBITS) --- 53 unchanged lines hidden (view full) --- 90 * Tang, P. Table-driven Implementation of the Exponential Function 91 * in IEEE Floating-Point Arithmetic. TOMS 15(2), 144-157 (1989). 92 */ 93float 94exp2f(float x) 95{ 96 double tv, twopk, u, z; 97 float t; | 29 30#include <float.h> 31 32#include "math.h" 33#include "math_private.h" 34 35#define TBLBITS 4 36#define TBLSIZE (1 << TBLBITS) --- 53 unchanged lines hidden (view full) --- 90 * Tang, P. Table-driven Implementation of the Exponential Function 91 * in IEEE Floating-Point Arithmetic. TOMS 15(2), 144-157 (1989). 92 */ 93float 94exp2f(float x) 95{ 96 double tv, twopk, u, z; 97 float t; |
| 98 uint32_t hx, htv, ix, i0; | 98 uint32_t hx, ix, i0; |
| 99 int32_t k; 100 101 /* Filter out exceptional cases. */ 102 GET_FLOAT_WORD(hx, x); 103 ix = hx & 0x7fffffff; /* high word of |x| */ 104 if(ix >= 0x43000000) { /* |x| >= 128 */ 105 if(ix >= 0x7f800000) { 106 if ((ix & 0x7fffff) != 0 || (hx & 0x80000000) == 0) --- 30 unchanged lines hidden --- | 99 int32_t k; 100 101 /* Filter out exceptional cases. */ 102 GET_FLOAT_WORD(hx, x); 103 ix = hx & 0x7fffffff; /* high word of |x| */ 104 if(ix >= 0x43000000) { /* |x| >= 128 */ 105 if(ix >= 0x7f800000) { 106 if ((ix & 0x7fffff) != 0 || (hx & 0x80000000) == 0) --- 30 unchanged lines hidden --- |