mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-10-31 15:47:10 -04:00
25 lines
421 B
Fortran
25 lines
421 B
Fortran
|
subroutine platanh(x,y)
|
||
|
|
isign=+1
|
||
|
|
z=x
|
||
|
|
if( x.lt.0 ) then
|
||
|
|
isign=-1
|
||
|
|
z=abs(x)
|
||
|
|
endif
|
||
|
|
if( z.le. 0.664 ) then
|
||
|
|
y=x/0.83
|
||
|
|
return
|
||
|
|
elseif( z.le. 0.9217 ) then
|
||
|
|
y=isign*(z-0.4064)/0.322
|
||
|
|
return
|
||
|
|
elseif( z.le. 0.9951 ) then
|
||
|
|
y=isign*(z-0.8378)/0.0524
|
||
|
|
return
|
||
|
|
elseif( z.le. 0.9998 ) then
|
||
|
|
y=isign*(z-0.9914)/0.0012
|
||
|
|
return
|
||
|
|
else
|
||
|
|
y=isign*7.0
|
||
|
|
return
|
||
|
|
endif
|
||
|
|
end subroutine platanh
|