diff options
Diffstat (limited to 'lib/floatunsisf.c')
-rw-r--r-- | lib/floatunsisf.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/lib/floatunsisf.c b/lib/floatunsisf.c deleted file mode 100644 index e392c0ecf116b..0000000000000 --- a/lib/floatunsisf.c +++ /dev/null @@ -1,49 +0,0 @@ -//===-- lib/floatunsisf.c - uint -> single-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 unsigned integer to single-precision conversion for the -// compiler-rt library in the IEEE-754 default round-to-nearest, ties-to-even -// mode. -// -//===----------------------------------------------------------------------===// - -#define SINGLE_PRECISION -#include "fp_lib.h" - -#include "int_lib.h" - -ARM_EABI_FNALIAS(ui2f, floatunsisf) - -fp_t __floatunsisf(unsigned int a) { - - const int aWidth = sizeof a * CHAR_BIT; - - // Handle zero as a special case to protect clz - if (a == 0) return fromRep(0); - - // Exponent of (fp_t)a is the width of abs(a). - const int exponent = (aWidth - 1) - __builtin_clz(a); - rep_t result; - - // Shift a into the significand field, rounding if it is a right-shift - if (exponent <= significandBits) { - const int shift = significandBits - exponent; - result = (rep_t)a << shift ^ implicitBit; - } else { - const int shift = exponent - significandBits; - result = (rep_t)a >> shift ^ implicitBit; - rep_t round = (rep_t)a << (typeWidth - shift); - if (round > signBit) result++; - if (round == signBit) result += result & 1; - } - - // Insert the exponent - result += (rep_t)(exponent + exponentBias) << significandBits; - return fromRep(result); -} |