Garbage call!
These files have been obsoleted by compiler technology (such as it is for gcc) for quite some time.
This commit is contained in:
Poul-Henning Kamp
parent
28bcc53bf7
commit
c717903379
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=86104
@ -1,58 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Add two quads. This is trivial since a one-bit carry from a single
|
||||
* u_long addition x+y occurs if and only if the sum x+y is less than
|
||||
* either x or y (the choice to compare with x or y is arbitrary).
|
||||
*/
|
||||
quad_t
|
||||
__adddi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb, sum;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
sum.ul[L] = aa.ul[L] + bb.ul[L];
|
||||
sum.ul[H] = aa.ul[H] + bb.ul[H] + (sum.ul[L] < bb.ul[L]);
|
||||
return (sum.q);
|
||||
}
|
||||
@ -1,56 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return a & b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__anddi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] &= bb.ul[0];
|
||||
aa.ul[1] &= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
||||
@ -1,57 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return 0, 1, or 2 as a <, =, > b respectively.
|
||||
* Both a and b are considered signed---which means only the high word is
|
||||
* signed.
|
||||
*/
|
||||
int
|
||||
__cmpdi2(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
return (aa.sl[H] < bb.sl[H] ? 0 : aa.sl[H] > bb.sl[H] ? 2 :
|
||||
aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
|
||||
}
|
||||
@ -1,56 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return a | b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__iordi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] |= bb.ul[0];
|
||||
aa.ul[1] |= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
||||
@ -1,51 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)locc.c 8.1 (Berkeley) 6/10/93
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <sys/libkern.h>
|
||||
|
||||
int
|
||||
locc(mask0, cp0, size)
|
||||
int mask0;
|
||||
char *cp0;
|
||||
u_int size;
|
||||
{
|
||||
register u_char *cp, *end, mask;
|
||||
|
||||
mask = mask0;
|
||||
cp = (u_char *)cp0;
|
||||
for (end = &cp[size]; cp < end && *cp != mask; ++cp);
|
||||
return (end - cp);
|
||||
}
|
||||
@ -1,64 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Shift an (unsigned) quad value left (logical shift left).
|
||||
* This is the same as arithmetic shift left!
|
||||
*/
|
||||
quad_t
|
||||
__lshldi3(a, shift)
|
||||
quad_t a;
|
||||
qshift_t shift;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
if (shift >= LONG_BITS) {
|
||||
aa.ul[H] = shift >= QUAD_BITS ? 0 :
|
||||
aa.ul[L] << (shift - LONG_BITS);
|
||||
aa.ul[L] = 0;
|
||||
} else if (shift > 0) {
|
||||
aa.ul[H] = (aa.ul[H] << shift) |
|
||||
(aa.ul[L] >> (LONG_BITS - shift));
|
||||
aa.ul[L] <<= shift;
|
||||
}
|
||||
return (aa.q);
|
||||
}
|
||||
@ -1,244 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Multiply two quads.
|
||||
*
|
||||
* Our algorithm is based on the following. Split incoming quad values
|
||||
* u and v (where u,v >= 0) into
|
||||
*
|
||||
* u = 2^n u1 * u0 (n = number of bits in `u_long', usu. 32)
|
||||
*
|
||||
* and
|
||||
*
|
||||
* v = 2^n v1 * v0
|
||||
*
|
||||
* Then
|
||||
*
|
||||
* uv = 2^2n u1 v1 + 2^n u1 v0 + 2^n v1 u0 + u0 v0
|
||||
* = 2^2n u1 v1 + 2^n (u1 v0 + v1 u0) + u0 v0
|
||||
*
|
||||
* Now add 2^n u1 v1 to the first term and subtract it from the middle,
|
||||
* and add 2^n u0 v0 to the last term and subtract it from the middle.
|
||||
* This gives:
|
||||
*
|
||||
* uv = (2^2n + 2^n) (u1 v1) +
|
||||
* (2^n) (u1 v0 - u1 v1 + u0 v1 - u0 v0) +
|
||||
* (2^n + 1) (u0 v0)
|
||||
*
|
||||
* Factoring the middle a bit gives us:
|
||||
*
|
||||
* uv = (2^2n + 2^n) (u1 v1) + [u1v1 = high]
|
||||
* (2^n) (u1 - u0) (v0 - v1) + [(u1-u0)... = mid]
|
||||
* (2^n + 1) (u0 v0) [u0v0 = low]
|
||||
*
|
||||
* The terms (u1 v1), (u1 - u0) (v0 - v1), and (u0 v0) can all be done
|
||||
* in just half the precision of the original. (Note that either or both
|
||||
* of (u1 - u0) or (v0 - v1) may be negative.)
|
||||
*
|
||||
* This algorithm is from Knuth vol. 2 (2nd ed), section 4.3.3, p. 278.
|
||||
*
|
||||
* Since C does not give us a `long * long = quad' operator, we split
|
||||
* our input quads into two longs, then split the two longs into two
|
||||
* shorts. We can then calculate `short * short = long' in native
|
||||
* arithmetic.
|
||||
*
|
||||
* Our product should, strictly speaking, be a `long quad', with 128
|
||||
* bits, but we are going to discard the upper 64. In other words,
|
||||
* we are not interested in uv, but rather in (uv mod 2^2n). This
|
||||
* makes some of the terms above vanish, and we get:
|
||||
*
|
||||
* (2^n)(high) + (2^n)(mid) + (2^n + 1)(low)
|
||||
*
|
||||
* or
|
||||
*
|
||||
* (2^n)(high + mid + low) + low
|
||||
*
|
||||
* Furthermore, `high' and `mid' can be computed mod 2^n, as any factor
|
||||
* of 2^n in either one will also vanish. Only `low' need be computed
|
||||
* mod 2^2n, and only because of the final term above.
|
||||
*/
|
||||
static quad_t __lmulq(u_long, u_long);
|
||||
|
||||
quad_t
|
||||
__muldi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu u, v, low, prod;
|
||||
register u_long high, mid, udiff, vdiff;
|
||||
register int negall, negmid;
|
||||
#define u1 u.ul[H]
|
||||
#define u0 u.ul[L]
|
||||
#define v1 v.ul[H]
|
||||
#define v0 v.ul[L]
|
||||
|
||||
/*
|
||||
* Get u and v such that u, v >= 0. When this is finished,
|
||||
* u1, u0, v1, and v0 will be directly accessible through the
|
||||
* longword fields.
|
||||
*/
|
||||
if (a >= 0)
|
||||
u.q = a, negall = 0;
|
||||
else
|
||||
u.q = -a, negall = 1;
|
||||
if (b >= 0)
|
||||
v.q = b;
|
||||
else
|
||||
v.q = -b, negall ^= 1;
|
||||
|
||||
if (u1 == 0 && v1 == 0) {
|
||||
/*
|
||||
* An (I hope) important optimization occurs when u1 and v1
|
||||
* are both 0. This should be common since most numbers
|
||||
* are small. Here the product is just u0*v0.
|
||||
*/
|
||||
prod.q = __lmulq(u0, v0);
|
||||
} else {
|
||||
/*
|
||||
* Compute the three intermediate products, remembering
|
||||
* whether the middle term is negative. We can discard
|
||||
* any upper bits in high and mid, so we can use native
|
||||
* u_long * u_long => u_long arithmetic.
|
||||
*/
|
||||
low.q = __lmulq(u0, v0);
|
||||
|
||||
if (u1 >= u0)
|
||||
negmid = 0, udiff = u1 - u0;
|
||||
else
|
||||
negmid = 1, udiff = u0 - u1;
|
||||
if (v0 >= v1)
|
||||
vdiff = v0 - v1;
|
||||
else
|
||||
vdiff = v1 - v0, negmid ^= 1;
|
||||
mid = udiff * vdiff;
|
||||
|
||||
high = u1 * v1;
|
||||
|
||||
/*
|
||||
* Assemble the final product.
|
||||
*/
|
||||
prod.ul[H] = high + (negmid ? -mid : mid) + low.ul[L] +
|
||||
low.ul[H];
|
||||
prod.ul[L] = low.ul[L];
|
||||
}
|
||||
return (negall ? -prod.q : prod.q);
|
||||
#undef u1
|
||||
#undef u0
|
||||
#undef v1
|
||||
#undef v0
|
||||
}
|
||||
|
||||
/*
|
||||
* Multiply two 2N-bit longs to produce a 4N-bit quad, where N is half
|
||||
* the number of bits in a long (whatever that is---the code below
|
||||
* does not care as long as quad.h does its part of the bargain---but
|
||||
* typically N==16).
|
||||
*
|
||||
* We use the same algorithm from Knuth, but this time the modulo refinement
|
||||
* does not apply. On the other hand, since N is half the size of a long,
|
||||
* we can get away with native multiplication---none of our input terms
|
||||
* exceeds (ULONG_MAX >> 1).
|
||||
*
|
||||
* Note that, for u_long l, the quad-precision result
|
||||
*
|
||||
* l << N
|
||||
*
|
||||
* splits into high and low longs as HHALF(l) and LHUP(l) respectively.
|
||||
*/
|
||||
static quad_t
|
||||
__lmulq(u_long u, u_long v)
|
||||
{
|
||||
u_long u1, u0, v1, v0, udiff, vdiff, high, mid, low;
|
||||
u_long prodh, prodl, was;
|
||||
union uu prod;
|
||||
int neg;
|
||||
|
||||
u1 = HHALF(u);
|
||||
u0 = LHALF(u);
|
||||
v1 = HHALF(v);
|
||||
v0 = LHALF(v);
|
||||
|
||||
low = u0 * v0;
|
||||
|
||||
/* This is the same small-number optimization as before. */
|
||||
if (u1 == 0 && v1 == 0)
|
||||
return (low);
|
||||
|
||||
if (u1 >= u0)
|
||||
udiff = u1 - u0, neg = 0;
|
||||
else
|
||||
udiff = u0 - u1, neg = 1;
|
||||
if (v0 >= v1)
|
||||
vdiff = v0 - v1;
|
||||
else
|
||||
vdiff = v1 - v0, neg ^= 1;
|
||||
mid = udiff * vdiff;
|
||||
|
||||
high = u1 * v1;
|
||||
|
||||
/* prod = (high << 2N) + (high << N); */
|
||||
prodh = high + HHALF(high);
|
||||
prodl = LHUP(high);
|
||||
|
||||
/* if (neg) prod -= mid << N; else prod += mid << N; */
|
||||
if (neg) {
|
||||
was = prodl;
|
||||
prodl -= LHUP(mid);
|
||||
prodh -= HHALF(mid) + (prodl > was);
|
||||
} else {
|
||||
was = prodl;
|
||||
prodl += LHUP(mid);
|
||||
prodh += HHALF(mid) + (prodl < was);
|
||||
}
|
||||
|
||||
/* prod += low << N */
|
||||
was = prodl;
|
||||
prodl += LHUP(low);
|
||||
prodh += HHALF(low) + (prodl < was);
|
||||
/* ... + low; */
|
||||
if ((prodl += low) < low)
|
||||
prodh++;
|
||||
|
||||
/* return 4N-bit product */
|
||||
prod.ul[H] = prodh;
|
||||
prod.ul[L] = prodl;
|
||||
return (prod.q);
|
||||
}
|
||||
@ -1,55 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return -a (or, equivalently, 0 - a), in quad. See subdi3.c.
|
||||
*/
|
||||
quad_t
|
||||
__negdi2(a)
|
||||
quad_t a;
|
||||
{
|
||||
union uu aa, res;
|
||||
|
||||
aa.q = a;
|
||||
res.ul[L] = -aa.ul[L];
|
||||
res.ul[H] = -aa.ul[H] - (res.ul[L] > 0);
|
||||
return (res.q);
|
||||
}
|
||||
@ -1,56 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return ~a. For some reason gcc calls this `one's complement' rather
|
||||
* than `not'.
|
||||
*/
|
||||
quad_t
|
||||
__one_cmpldi2(a)
|
||||
quad_t a;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
aa.ul[0] = ~aa.ul[0];
|
||||
aa.ul[1] = ~aa.ul[1];
|
||||
return (aa.q);
|
||||
}
|
||||
@ -1,57 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Subtract two quad values. This is trivial since a one-bit carry
|
||||
* from a single u_long difference x-y occurs if and only if (x-y) > x.
|
||||
*/
|
||||
quad_t
|
||||
__subdi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb, diff;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
diff.ul[L] = aa.ul[L] - bb.ul[L];
|
||||
diff.ul[H] = aa.ul[H] - bb.ul[H] - (diff.ul[L] > aa.ul[L]);
|
||||
return (diff.q);
|
||||
}
|
||||
@ -1,56 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <libkern/quad.h>
|
||||
|
||||
/*
|
||||
* Return a ^ b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__xordi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] ^= bb.ul[0];
|
||||
aa.ul[1] ^= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user