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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/floatuntisf.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/floatuntisf.c')
-rw-r--r--lib/libcompiler_rt/floatuntisf.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/lib/libcompiler_rt/floatuntisf.c b/lib/libcompiler_rt/floatuntisf.c
deleted file mode 100644
index c0dd0275ddb..00000000000
--- a/lib/libcompiler_rt/floatuntisf.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/* ===-- floatuntisf.c - Implement __floatuntisf ---------------------------===
- *
- * 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 __floatuntisf for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-
-#ifdef CRT_HAS_128BIT
-
-/* Returns: convert a to a float, rounding toward even. */
-
-/* Assumption: float is a IEEE 32 bit floating point type
- * tu_int is a 128 bit integral type
- */
-
-/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */
-
-COMPILER_RT_ABI float
-__floatuntisf(tu_int a)
-{
- if (a == 0)
- return 0.0F;
- const unsigned N = sizeof(tu_int) * CHAR_BIT;
- int sd = N - __clzti2(a); /* number of significant digits */
- int e = sd - 1; /* exponent */
- if (sd > FLT_MANT_DIG)
- {
- /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx
- * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR
- * 12345678901234567890123456
- * 1 = msb 1 bit
- * P = bit FLT_MANT_DIG-1 bits to the right of 1
- * Q = bit FLT_MANT_DIG bits to the right of 1
- * R = "or" of all bits to the right of Q
- */
- switch (sd)
- {
- case FLT_MANT_DIG + 1:
- a <<= 1;
- break;
- case FLT_MANT_DIG + 2:
- break;
- default:
- a = (a >> (sd - (FLT_MANT_DIG+2))) |
- ((a & ((tu_int)(-1) >> ((N + FLT_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 FLT_MANT_DIG or FLT_MANT_DIG+1 bits */
- if (a & ((tu_int)1 << FLT_MANT_DIG))
- {
- a >>= 1;
- ++e;
- }
- /* a is now rounded to FLT_MANT_DIG bits */
- }
- else
- {
- a <<= (FLT_MANT_DIG - sd);
- /* a is now rounded to FLT_MANT_DIG bits */
- }
- float_bits fb;
- fb.u = ((e + 127) << 23) | /* exponent */
- ((su_int)a & 0x007FFFFF); /* mantissa */
- return fb.f;
-}
-
-#endif /* CRT_HAS_128BIT */