INSTALL/test_zcomplexdiv.f(3)                         Library Functions Manual

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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LAPACK                          Version 3.12.0   INSTALL/test_zcomplexdiv.f(3)