* Simple constants.
fpzero
0
fpone
1
fptwo
2
fpten
10
fphalf
0.5
* Numbers used in conversion.
fplolim
99999999.95
fphilim
999999999.5
* Mathematical constants.
fpi
3.1415926535898
fln2
0.6931471805599
* Even coefficients for the sin(x)/x polynumial.
sincoeff 
-0.0000000239
 0.0000027526
-0.0001984090
 0.0083333315
-0.1666666664
* Even coefficients for the arctan(x)/x polynomial.
atancoeff
 0.0028662257
-0.0161657367
 0.0429096138
-0.0752896400
 0.1065626393
-0.1420889944
 0.1999355085
-0.3333314528
* Coefficients for the exp(-x) polynomial.
expcoeff
-0.0001413161
 0.0013298820
-0.0083013598
 0.0416573475
-0.1666653019
 0.4999999206
-0.9999999995
* Coefficients for the ln(1+x) polynomial.
lncoeff
-0.0064535442
 0.0360884937
-0.0953293897
 0.1676540711
-0.2407338084
 0.3317990258
-0.4998741238
 0.9999964239