GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcompiler_rt/floatdixf.c Lines: 0 11 0.0 %
Date: 2017-11-07 Branches: 0 2 0.0 %

Line Branch Exec Source
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/* ===-- floatdixf.c - Implement __floatdixf -------------------------------===
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 *
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 *                     The LLVM Compiler Infrastructure
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 *
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 * This file is dual licensed under the MIT and the University of Illinois Open
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 * Source Licenses. See LICENSE.TXT for details.
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 *
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 * ===----------------------------------------------------------------------===
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 *
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 * This file implements __floatdixf for the compiler_rt library.
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 *
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 * ===----------------------------------------------------------------------===
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 */
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#if !_ARCH_PPC
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#include "int_lib.h"
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/* Returns: convert a to a long double, rounding toward even. */
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/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
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 *             di_int is a 64 bit integral type
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 */
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/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
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 * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
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 */
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COMPILER_RT_ABI long double
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__floatdixf(di_int a)
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{
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    if (a == 0)
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        return 0.0;
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    const unsigned N = sizeof(di_int) * CHAR_BIT;
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    const di_int s = a >> (N-1);
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    a = (a ^ s) - s;
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    int clz = __builtin_clzll(a);
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    int e = (N - 1) - clz ;    /* exponent */
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    long_double_bits fb;
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    fb.u.high.s.low = ((su_int)s & 0x00008000) |  /* sign */
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		      (e + 16383);                /* exponent */
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    fb.u.low.all = a << clz;                    /* mantissa */
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    return fb.f;
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}
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#endif /* !_ARCH_PPC */