src/java.base/share/classes/java/lang/FdLibm.java

*** 350,368 ****
              if ( (n | (y_is_int - 1)) == 0)
                  s = -1.0; // (-ve)**(odd int)
  
              double p_h, p_l, t1, t2;
              // |y| is huge
!             if (y_abs > 0x1.0p31) { // if |y| > 2**31
                  final double INV_LN2   =  0x1.7154_7652_b82fep0;   //  1.44269504088896338700e+00 = 1/ln2
                  final double INV_LN2_H =  0x1.715476p0;            //  1.44269502162933349609e+00 = 24 bits of 1/ln2
                  final double INV_LN2_L =  0x1.4ae0_bf85_ddf44p-26; //  1.92596299112661746887e-08 = 1/ln2 tail
  
                  // Over/underflow if x is not close to one
!                 if (x_abs < 0x1.fffffp-1) // |x| < 0.9999995231628418
                      return (y < 0.0) ? s * INFINITY : s * 0.0;
!                 if (x_abs > 1.0)         // |x| > 1.0
                      return (y > 0.0) ? s * INFINITY : s * 0.0;
                  /*
                   * now |1-x| is tiny <= 2**-20, sufficient to compute
                   * log(x) by x - x^2/2 + x^3/3 - x^4/4
                   */
--- 350,368 ----
              if ( (n | (y_is_int - 1)) == 0)
                  s = -1.0; // (-ve)**(odd int)
  
              double p_h, p_l, t1, t2;
              // |y| is huge
!             if (y_abs > 0x1.00000_ffff_ffffp31) { // if |y| > ~2**31
                  final double INV_LN2   =  0x1.7154_7652_b82fep0;   //  1.44269504088896338700e+00 = 1/ln2
                  final double INV_LN2_H =  0x1.715476p0;            //  1.44269502162933349609e+00 = 24 bits of 1/ln2
                  final double INV_LN2_L =  0x1.4ae0_bf85_ddf44p-26; //  1.92596299112661746887e-08 = 1/ln2 tail
  
                  // Over/underflow if x is not close to one
!                 if (x_abs < 0x1.fffff_0000_0000p-1) // |x| < ~0.9999995231628418
                      return (y < 0.0) ? s * INFINITY : s * 0.0;
!                 if (x_abs > 0x1.00000_ffff_ffffp0)         // |x| > ~1.0
                      return (y > 0.0) ? s * INFINITY : s * 0.0;
                  /*
                   * now |1-x| is tiny <= 2**-20, sufficient to compute
                   * log(x) by x - x^2/2 + x^3/3 - x^4/4
                   */