diff options
Diffstat (limited to 'lib/floatsidf.c')
-rw-r--r-- | lib/floatsidf.c | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/lib/floatsidf.c b/lib/floatsidf.c deleted file mode 100644 index 18f378f2a9002..0000000000000 --- a/lib/floatsidf.c +++ /dev/null @@ -1,52 +0,0 @@ -//===-- lib/floatsidf.c - integer -> double-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 integer to double-precision conversion for the -// compiler-rt library in the IEEE-754 default round-to-nearest, ties-to-even -// mode. -// -//===----------------------------------------------------------------------===// - -#define DOUBLE_PRECISION -#include "fp_lib.h" - -#include "int_lib.h" - -ARM_EABI_FNALIAS(i2d, floatsidf) - -fp_t __floatsidf(int a) { - - const int aWidth = sizeof a * CHAR_BIT; - - // Handle zero as a special case to protect clz - if (a == 0) - return fromRep(0); - - // All other cases begin by extracting the sign and absolute value of a - rep_t sign = 0; - if (a < 0) { - sign = signBit; - a = -a; - } - - // 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 and clear the implicit bit. Extra - // cast to unsigned int is necessary to get the correct behavior for - // the input INT_MIN. - const int shift = significandBits - exponent; - result = (rep_t)(unsigned int)a << shift ^ implicitBit; - - // Insert the exponent - result += (rep_t)(exponent + exponentBias) << significandBits; - // Insert the sign bit and return - return fromRep(result | sign); -} |