11175 libm should use signbit() correctly
11188 c99 math macros should return strictly backward compatible values

*** 25,35 ****
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! /* __rem_pio2l(x,y)
   *
   * return the remainder of x rem pi/2 in y[0]+y[1]
   * by calling __rem_pio2m
   */
  
--- 25,36 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! /*
!  * __rem_pio2l(x,y)
   *
   * return the remainder of x rem pi/2 in y[0]+y[1]
   * by calling __rem_pio2m
   */
  
*** 68,78 ****
          n = __rem_pio2m(t, v, e0, nx, 2, _TBL_ipio2l_inf);
          z = (long double)v[1];
          w = (long double)v[0];
          y[0] = z + w;
          y[1] = z - (y[0] - w);
!         if (sign == 1) {
                  y[0] = -y[0];
                  y[1] = -y[1];
                  return (-n);
          }
          return (n);
--- 69,79 ----
          n = __rem_pio2m(t, v, e0, nx, 2, _TBL_ipio2l_inf);
          z = (long double)v[1];
          w = (long double)v[0];
          y[0] = z + w;
          y[1] = z - (y[0] - w);
!         if (sign != 0) {
                  y[0] = -y[0];
                  y[1] = -y[1];
                  return (-n);
          }
          return (n);