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-rw-r--r--lib/builtins/floatuntixf.c81
1 files changed, 0 insertions, 81 deletions
diff --git a/lib/builtins/floatuntixf.c b/lib/builtins/floatuntixf.c
deleted file mode 100644
index ea81cb1bcdae1..0000000000000
--- a/lib/builtins/floatuntixf.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* ===-- floatuntixf.c - Implement __floatuntixf ---------------------------===
- *
- * 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 __floatuntixf for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-
-#ifdef CRT_HAS_128BIT
-
-/* Returns: convert a to a long double, rounding toward even. */
-
-/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
- * tu_int is a 128 bit integral type
- */
-
-/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
- * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
- */
-
-COMPILER_RT_ABI long double
-__floatuntixf(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.s.low = (e + 16383); /* exponent */
- fb.u.low.all = (du_int)a; /* mantissa */
- return fb.f;
-}
-
-#endif