INSTALL/test_zcomplexdiv.f(3)

NAME
INSTALL/test_zcomplexdiv.f

SYNOPSIS

  Functions/Subroutines
program zdiv
zdiv tests the robustness and precision of the double complex division

Function/Subroutine Documentation

  program zdiv

zdiv tests the robustness and precision of the double complex division

Author
    Weslley S. Pereira, University of Colorado Denver, U.S.

     Real values for test:
     (1) x = 2**m, where m = MINEXPONENT-DIGITS, ..., MINEXPONENT-1.
         Mind that not all platforms might implement subnormal numbers.
     (2) x = 2**m, where m = MINEXPONENT, ..., 0.
     (3) x = OV, where OV is the overflow threshold. OV^2 overflows but the norm is OV.
     (4) x = 2**m, where m = MAXEXPONENT-1, ..., 1.
     Tests:
     (a) y = x + 0 * I, y/y = 1
     (b) y = 0 + x * I, y/y = 1
     (c) y = x + x * I, y/y = 1
     (d) y1 = 0 + x * I, y2 = x + 0 * I, y1/y2 = I
     (e) y1 = 0 + x * I, y2 = x + 0 * I, y2/y1 = -I
     (f) y = x + x * I, y/conj(y) = I
     Special cases:
     (i) Inf inputs:
        (1) y = ( Inf + 0   * I)
        (2) y = ( 0   + Inf * I)
        (3) y = (-Inf + 0   * I)
        (4) y = ( 0   - Inf * I)
        (5) y = ( Inf + Inf * I)
     Tests:
        (a) 0 / y is either 0 or NaN.
        (b) 1 / y is either 0 or NaN.
        (c) y / y is NaN.
     (n) NaN inputs:
        (1) y = (NaN + 0   * I)
        (2) y = (0   + NaN * I)
        (3) y = (NaN + NaN * I)
     Tests:
        (a) 0 / y is NaN.
        (b) 1 / y is NaN.
        (c) y / y is NaN.

Definition at line 57 of file test_zcomplexdiv.f.

Author

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