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BASIC Source File  |  1992-08-29  |  982b  |  32 lines
  1. '   +----------------------------------------------------------------------+
  2. '   |                                                                      |
  3. '   |        BASWIZ  Copyright (c) 1990-1992  Thomas G. Hanlin III         |
  4. '   |                                                                      |
  5. '   |                      The BASIC Wizard's Library                      |
  6. '   |                                                                      |
  7. '   +----------------------------------------------------------------------+
  8.  
  9.    DECLARE FUNCTION CosHD# (Nr AS DOUBLE)
  10.    DECLARE FUNCTION SinHD# (Nr AS DOUBLE)
  11.  
  12.    DEFDBL A-Z
  13.  
  14. FUNCTION TanHD# (Nr AS DOUBLE)
  15.    IF Nr < 0# THEN
  16.       N = -Nr
  17.       Negate% = -1
  18.    ELSE
  19.       N = Nr
  20.    END IF
  21.    IF N > 21# THEN
  22.       TanHD# = 99999#
  23.    ELSE
  24.       tmp = SinHD#(N) / CosHD#(N)
  25.       IF Negate% THEN
  26.          TanHD# = -tmp
  27.       ELSE
  28.          TanHD# = tmp
  29.       END IF
  30.    END IF
  31. END FUNCTION
  32.