text: /* ===-- fixdfti.c - Implement __fixdfti -----------------------------------===
   *
   *                     The LLVM Compiler Infrastructure
   *
   * This file is distributed under the University of Illinois Open Source
   * License. See LICENSE.TXT for details.
   *
   * ===----------------------------------------------------------------------===
   *
   * This file implements __fixdfti for the compiler_rt library.
   *
   * ===----------------------------------------------------------------------===
   */
  
  #if __x86_64
  
  #include "int_lib.h"
  
  /* Returns: convert a to a signed long long, rounding toward zero. */
  
  /* Assumption: double is a IEEE 64 bit floating point type 
   *             su_int is a 32 bit integral type
   *             value in double is representable in ti_int (no range checking performed)
   */
  
  /* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm */
  
  ti_int
  __fixdfti(double a)
  {
      double_bits fb;
      fb.f = a;
      int e = ((fb.u.s.high & 0x7FF00000) >> 20) - 1023;
      if (e < 0)
          return 0;
      ti_int s = (si_int)(fb.u.s.high & 0x80000000) >> 31;
      ti_int r = 0x0010000000000000uLL | (0x000FFFFFFFFFFFFFuLL & fb.u.all);
      if (e > 52)
          r <<= (e - 52);
      else
          r >>= (52 - e);
      return (r ^ s) - s;
  }
  
  #endif
  