| s_expl.c (251334) | s_expl.c (251335) |
|---|---|
| 1/*- 2 * Copyright (c) 2009-2013 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) 2009-2013 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/ld128/s_expl.c 251334 2013-06-03 18:40:00Z kargl $"); | 28__FBSDID("$FreeBSD: head/lib/msun/ld128/s_expl.c 251335 2013-06-03 18:51:34Z kargl $"); |
| 29 30/* 31 * ld128 version of s_expl.c. See ../ld80/s_expl.c for most comments. 32 */ 33 34#include <float.h> 35 36#include "fpmath.h" --- 192 unchanged lines hidden (view full) --- 229 uint32_t hx, ix; 230 231 /* Filter out exceptional cases. */ 232 u.e = x; 233 hx = u.xbits.expsign; 234 ix = hx & 0x7fff; 235 if (ix >= BIAS + 13) { /* |x| >= 8192 or x is NaN */ 236 if (ix == BIAS + LDBL_MAX_EXP) { | 29 30/* 31 * ld128 version of s_expl.c. See ../ld80/s_expl.c for most comments. 32 */ 33 34#include <float.h> 35 36#include "fpmath.h" --- 192 unchanged lines hidden (view full) --- 229 uint32_t hx, ix; 230 231 /* Filter out exceptional cases. */ 232 u.e = x; 233 hx = u.xbits.expsign; 234 ix = hx & 0x7fff; 235 if (ix >= BIAS + 13) { /* |x| >= 8192 or x is NaN */ 236 if (ix == BIAS + LDBL_MAX_EXP) { |
| 237 if (hx & 0x8000 && u.xbits.manh == 0 && 238 u.xbits.manl == 0) 239 return (0.0L); /* x is -Inf */ | 237 if (hx & 0x8000) /* x is -Inf or -NaN */ 238 return (-1 / x); |
| 240 return (x + x); /* x is +Inf or NaN */ 241 } 242 if (x > o_threshold) 243 return (huge * huge); 244 if (x < u_threshold) 245 return (tiny * tiny); | 239 return (x + x); /* x is +Inf or NaN */ 240 } 241 if (x > o_threshold) 242 return (huge * huge); 243 if (x < u_threshold) 244 return (tiny * tiny); |
| 246 } else if (ix < BIAS - 115) { /* |x| < 0x1p-115 */ 247 if (huge + x > 1.0L) /* trigger inexact iff x != 0 */ 248 return (1.0L + x); | 245 } else if (ix < BIAS - 114) { /* |x| < 0x1p-114 */ 246 return (1 + x); /* 1 with inexact iff x != 0 */ |
| 249 } 250 251 /* Reduce x to (k*ln2 + endpoint[n2] + r1 + r2). */ 252 /* Use a specialized rint() to get fn. Assume round-to-nearest. */ 253 /* XXX assume no extra precision for the additions, as for trig fns. */ 254 /* XXX this set of comments is now quadruplicated. */ 255 fn = (double)x * INV_L + 0x1.8p52 - 0x1.8p52; 256#if defined(HAVE_EFFICIENT_IRINT) --- 36 unchanged lines hidden --- | 247 } 248 249 /* Reduce x to (k*ln2 + endpoint[n2] + r1 + r2). */ 250 /* Use a specialized rint() to get fn. Assume round-to-nearest. */ 251 /* XXX assume no extra precision for the additions, as for trig fns. */ 252 /* XXX this set of comments is now quadruplicated. */ 253 fn = (double)x * INV_L + 0x1.8p52 - 0x1.8p52; 254#if defined(HAVE_EFFICIENT_IRINT) --- 36 unchanged lines hidden --- |