04 April 2008 09:22:55 AM

G++_INTRINSICS:
  Demonstrate the use of some G++ intrinsic functions.

TEST_ERF:
  Test ERF, which evaluates the error function ERF(X).

      X               ERF(X)          ERF(X)          DIFF
                     (tabulated)     (computed)

               0               0               0               0
             0.1        0.112463        0.112463               0
             0.2        0.222703        0.222703     2.77556e-17
             0.3        0.328627        0.328627     5.55112e-17
             0.4        0.428392        0.428392     5.55112e-17
             0.5          0.5205          0.5205               0
             0.6        0.603856        0.603856     1.11022e-16
             0.7        0.677801        0.677801     1.11022e-16
             0.8        0.742101        0.742101               0
             0.9        0.796908        0.796908     1.11022e-16
               1        0.842701        0.842701     1.11022e-16
             1.1        0.880205        0.880205               0
             1.2        0.910314        0.910314     1.11022e-16
             1.3        0.934008        0.934008               0
             1.4        0.952285        0.952285     1.11022e-16
             1.5        0.966105        0.966105     1.11022e-16
             1.6        0.976348        0.976348               0
             1.7         0.98379         0.98379               0
             1.8        0.989091        0.989091     1.11022e-16
             1.9         0.99279         0.99279     1.11022e-16
               2        0.995322        0.995322               0

TEST_ERFC:
  Test ERFC, which evaluates the complementary error function.

      X               ERFC(X)         ERFC(X)         DIFF
                     (tabulated)     (computed)

               0               1               1               0
             0.2        0.777297        0.777297               0
             0.4        0.571608        0.571608     1.11022e-16
             0.6        0.396144        0.396144     5.55112e-17
             0.8        0.257899        0.257899               0
               1        0.157299        0.157299     5.55112e-17
             1.2        0.089686        0.089686     1.38778e-17
             1.4       0.0477149       0.0477149     1.38778e-17
             1.6       0.0236516       0.0236516               0
             1.8       0.0109095       0.0109095     6.93889e-18
               2      0.00467773      0.00467773     1.73472e-18
             2.2      0.00186285      0.00186285     8.67362e-19
             2.4     0.000688514     0.000688514      2.1684e-19
             2.6     0.000236034     0.000236034     8.13152e-20
             2.8     7.50132e-05     7.50132e-05     6.77626e-20
               3     2.20905e-05     2.20905e-05     3.38813e-21
             3.2     6.02576e-06     6.02576e-06     5.92923e-21
             3.4     1.52199e-06     1.52199e-06     1.27055e-21
             3.6     3.55863e-07     3.55863e-07     3.70577e-22
             3.8     7.70039e-08     7.70039e-08     1.05879e-22
               4     1.54173e-08     1.54173e-08               0

 TEST_GAMMA:
   Test GAMMA, which evaluates the Gamma function.

      X              GAMMA(X)         GAMMA(X)        DIFF
                    (tabulated)      (computed)

            -0.5        -3.54491        -3.54491     4.44089e-16
           -0.01        -100.587        -100.587     4.26326e-14
            0.01         99.4326         99.4326               0
             0.1         9.51351         9.51351     1.77636e-15
             0.2         4.59084         4.59084               0
             0.4         2.21816         2.21816               0
             0.5         1.77245         1.77245               0
             0.6         1.48919         1.48919               0
             0.8         1.16423         1.16423     2.22045e-16
               1               1               1               0
             1.1        0.951351        0.951351               0
             1.2        0.918169        0.918169               0
             1.3        0.897471        0.897471               0
             1.4        0.887264        0.887264     1.11022e-16
             1.5        0.886227        0.886227               0
             1.6        0.893515        0.893515               0
             1.7        0.908639        0.908639               0
             1.8        0.931384        0.931384               0
             1.9        0.961766        0.961766               0
               2               1               1               0
               3               2               2               0
               4               6               6               0
              10          362880          362880               0
              20     1.21645e+17     1.21645e+17              80
              30     8.84176e+30     8.84176e+30     4.95396e+16

G++_INTRINSICS:
  Demonstrate the use of some GCC intrinsic functions.

04 April 2008 09:22:55 AM