C1:real;Type Range Significant digits Size in bytes Real48 2.9 x 10^-39 .. 1.7 x 10^38 11-12 6 Single 1.5 x 10^-45 .. 3.4 x 10^38 7-8 4 Double 5.0 x 10^-324 .. 1.7 x 10^308 15-16 8 Extended 3.6 x 10^-4951 .. 1.1 x 10^4932 19-20 10 Comp -2^63+1 .. 2^63 -1 19-20 8 Currency -922337203685477.5808.. 922337203685477.5807 19-20 8 The generic type Real, in its current implementation, is equivalent to Double.Generic real types Type Range Significant digits Size in bytes Real 5.0 x 10^-324 .. 1.7 x 10^308 15-16 8
Real48 2.9 x 10^-39 .. 1.7 x 10^38 11-12 6
Single 1.5 x 10^-45 .. 3.4 x 10^38 7-8 4
Double 5.0 x 10^-324 .. 1.7 x 10^308 15-16 8
Extended 3.6 x 10^-4951 .. 1.1 x 10^4932 19-20 10
Comp -2^63+1 .. 2^63 -1 19-20 8
Currency -922337203685477.5808.. 922337203685477.5807 19-20 8
The generic type Real, in its current implementation, is equivalent to Double.Generic real types
Type Range Significant digits Size in bytes
Real 5.0 x 10^-324 .. 1.7 x 10^308 15-16 8
难道const real c1=10^-14 ???
E0 = 0.00000000000010;
E1 = 10e-14;Format('%.14f', [E0])
Format('%.14f', [E1])