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authorpatrick <patrick@openbsd.org>2020-08-10 21:14:10 +0000
committerpatrick <patrick@openbsd.org>2020-08-10 21:14:10 +0000
commitf2119caf99b8ed409235597050ceebdc9102f562 (patch)
treecfb90cfe994f47cfaf95506823ca0dac2d08b04d /lib/libcompiler_rt/floatuntitf.c
parentUn-hook and re-hook libcompiler_rt. (diff)
downloadwireguard-openbsd-f2119caf99b8ed409235597050ceebdc9102f562.tar.xz
wireguard-openbsd-f2119caf99b8ed409235597050ceebdc9102f562.zip
Tedu compiler-rt 8.0.1.
Diffstat (limited to 'lib/libcompiler_rt/floatuntitf.c')
-rw-r--r--lib/libcompiler_rt/floatuntitf.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/lib/libcompiler_rt/floatuntitf.c b/lib/libcompiler_rt/floatuntitf.c
deleted file mode 100644
index e2518c93f23..00000000000
--- a/lib/libcompiler_rt/floatuntitf.c
+++ /dev/null
@@ -1,79 +0,0 @@
-//===-- lib/floatuntitf.c - uint128 -> quad-precision conversion --*- C -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements tu_int to quad-precision conversion for the
-// compiler-rt library in the IEEE-754 default round-to-nearest, ties-to-even
-// mode.
-//
-//===----------------------------------------------------------------------===//
-
-#define QUAD_PRECISION
-#include "fp_lib.h"
-#include "int_lib.h"
-
-/* Returns: convert a tu_int to a fp_t, rounding toward even. */
-
-/* Assumption: fp_t is a IEEE 128 bit floating point type
- * tu_int is a 128 bit integral type
- */
-
-/* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
- * mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
- */
-
-#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
-COMPILER_RT_ABI fp_t
-__floatuntitf(tu_int a) {
- if (a == 0)
- return 0.0;
- const unsigned N = sizeof(tu_int) * CHAR_BIT;
- int sd = N - __clzti2(a); /* number of significant digits */
- int e = sd - 1; /* exponent */
- if (sd > LDBL_MANT_DIG) {
- /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx
- * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR
- * 12345678901234567890123456
- * 1 = msb 1 bit
- * P = bit LDBL_MANT_DIG-1 bits to the right of 1
- * Q = bit LDBL_MANT_DIG bits to the right of 1
- * R = "or" of all bits to the right of Q
- */
- switch (sd) {
- case LDBL_MANT_DIG + 1:
- a <<= 1;
- break;
- case LDBL_MANT_DIG + 2:
- break;
- default:
- a = (a >> (sd - (LDBL_MANT_DIG+2))) |
- ((a & ((tu_int)(-1) >> ((N + LDBL_MANT_DIG+2) - sd))) != 0);
- };
- /* finish: */
- a |= (a & 4) != 0; /* Or P into R */
- ++a; /* round - this step may add a significant bit */
- a >>= 2; /* dump Q and R */
- /* a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits */
- if (a & ((tu_int)1 << LDBL_MANT_DIG)) {
- a >>= 1;
- ++e;
- }
- /* a is now rounded to LDBL_MANT_DIG bits */
- } else {
- a <<= (LDBL_MANT_DIG - sd);
- /* a is now rounded to LDBL_MANT_DIG bits */
- }
-
- long_double_bits fb;
- fb.u.high.all = (du_int)(e + 16383) << 48 /* exponent */
- | ((a >> 64) & 0x0000ffffffffffffLL); /* significand */
- fb.u.low.all = (du_int)(a);
- return fb.f;
-}
-
-#endif