Hallo Albert,
 
Het volgende heb ik aan je FLTEST toestand gewijzigd:

FACOS.UB
--------
 2550           fnTarget(X)
 2551              IF X=0 THEN y=2*atan(1) else y=atan(sqrt(1-X^2)/X)
 2552              if x<0 then result=y+4*ATAN(1) else result=y              
 2570           return(Result)

ACOSH(r)  :   r >= 1
ASINH(r)  :   r >= 0

Met het bovenstaande geincorporeerd levert DOIT.FRT het volgende:
Creating --- Plotting Function Values  Version 0.1t ---
MantissaBits = 52, EPSSCALE =  4.50359962737048E+015
feps =  1.11022302462516E-016

	Presenting statistics of FTANH, hit a key to go on.
	funmax   4.000000  maxix    -45
	funmin  -4.000000  minix    -81
	funsma   0.000000  smallest -152
	funlar   4.000000  largest  -81

	Presenting statistics of FSQRT, hit a key to go on.
	funmax   3.000000  maxix    104
	funmin  -3.000000  minix    19
	funsma   0.000000  smallest 0
	funlar   3.000000  largest  19

	Presenting statistics of FACOS, hit a key to go on.
	funmax   2.000000  maxix    -30
	funmin  -4.000000  minix    -15
	funsma   0.000000  smallest -32
	funlar   4.000000  largest  -15

	Presenting statistics of FALOG, hit a key to go on.
	funmax   14.000000  maxix    -155
	funmin  -17.000000  minix    -159
	funsma    0.000000  smallest -158
	funlar   17.000000  largest  -159

	Presenting statistics of FASIN, hit a key to go on.
	funmax  1.000000  maxix    -15
	funmin  -1.000000  minix    -13
	funsma  0.000000  smallest -16
	funlar  1.000000  largest  -15

	Presenting statistics of FATAN, hit a key to go on.
	funmax   3.000000  maxix    -154
	funmin  -3.000000  minix    -5
	funsma   0.000000  smallest -159
	funlar   3.000000  largest  -154

	Presenting statistics of FATAN2F, hit a key to go on.
	funmax   4.000000  maxix    13
	funmin  -4.000000  minix    -13
	funsma   0.000000  smallest -159
	funlar   4.000000  largest  -13

	Presenting statistics of FATAN2S, hit a key to go on.
	funmax   3.000000  maxix    -77
	funmin  -3.000000  minix    -96
	funsma   0.000000  smallest -155
	funlar   3.000000  largest  -96

	Presenting statistics of FCOS, hit a key to go on.
	funmax   1.500000  maxix    -121
	funmin  -1.500000  minix    -157
	funsma   0.000000  smallest -158
	funlar   1.500000  largest  -157

	Presenting statistics of FEXP, hit a key to go on.
	funmax   8.000000  maxix    -200
	funmin  -7.000000  minix    -203
	funsma   0.000000  smallest -306
	funlar   8.000000  largest  -200

	Presenting statistics of FEXPM1, hit a key to go on.
	funmax   5.000000  maxix    63
	funmin  -5.000000  minix    96
	funsma   0.000000  smallest -160
	funlar   5.000000  largest  63

	Presenting statistics of FLN, hit a key to go on.
	funmax   3.000000  maxix    34
	funmin  -3.000000  minix    110
	funsma   0.000000  smallest 2
	funlar   3.000000  largest  34

	Presenting statistics of FLNP1, hit a key to go on.
	funmax   3.000000  maxix    18
	funmin  -3.000000  minix    94
	funsma   0.000000  smallest -14
	funlar   3.000000  largest  18

	Presenting statistics of FLOG, hit a key to go on.
	funmax   4.000000  maxix    139
	funmin  -3.000000  minix    149
	funsma   0.000000  smallest 2
	funlar   4.000000  largest  139

	Presenting statistics of FSIN, hit a key to go on.
	funmax   2.500000  maxix    319
	funmin  -2.500000  minix    -319
	funsma   0.000000  smallest -269
	funlar   2.500000  largest  -319

	Redefining FSIN
	Redefining FCOS
	Presenting statistics of FSIN, hit a key to go on.
	funmax   1.500000  maxix    -221
	funmin  -1.500000  minix    -143
	funsma   0.000000  smallest -320
	funlar   1.500000  largest  -221

	Presenting statistics of FCOS, hit a key to go on.
	funmax   1.000000  maxix    -158
	funmin  -1.500000  minix    -142
	funsma   0.000000  smallest -160
	funlar   1.500000  largest  -142

	Presenting statistics of FTAN, hit a key to go on.
	funmax   3.000000  maxix    -96
	funmin  -3.000000  minix    -153
	funsma   0.000000  smallest -157
	funlar   3.000000  largest  -153

	Presenting statistics of FSQR, hit a key to go on.
	funmax   2.000000  maxix    -55
	funmin  -1.000000  minix    -145
	funsma   0.000000  smallest -160
	funlar   2.000000  largest  -55

	Presenting statistics of FCOSH, hit a key to go on.
	funmax   5.000000  maxix    -109
	funmin  -5.000000  minix    -155
	funsma   0.000000  smallest -147
	funlar   5.000000  largest  -155

	Presenting statistics of FSINH, hit a key to go on.
	funmax   6.000000  maxix    -99
	funmin  -6.000000  minix    -109
	funsma   0.000000  smallest -149
	funlar   6.000000  largest  -109

	Presenting statistics of FACOSH, hit a key to go on.
	funmax   2.000000  maxix    39
	funmin  -2.000000  minix    21
	funsma   0.000000  smallest 16
	funlar   2.000000  largest  21

	Presenting statistics of FASINH, hit a key to go on.
	funmax   3.000000  maxix    98
	funmin  -3.000000  minix    161
	funsma   0.000000  smallest 32
	funlar   3.000000  largest  98

	Presenting statistics of FATANH, hit a key to go on.
	funmax   3.000000  maxix    3
	funmin  -2.000000  minix    -11
	funsma   0.000000  smallest -9
	funlar   3.000000  largest  3

>M.