On Saturday, 13 January 2018 at 14:43:53 UTC, rumbu wrote:
I received a suggestion to reorganize the file structure
because of some bug in dub
(https://issues.dlang.org/show_bug.cgi?id=11847). The dub.json
remained out of sync.
I changed it, but I am not 100% sure that it's working. I am
not experienced with dub, If someone wants to maintain
dub.json, I will be more than happy to accept any pull request.
I can compile/run the nosine.d now. But implicit conversion
between decimalX and float/double/real does not seem to work. I
came across this in
sinus.d
```
import std.stdio;
import std.math;
import decimal;
void main ()
{
real r;
for (r = 1; r < 6; r += .1L) {
decimal128 d = r;
auto dsin = sin (d);
auto rsin = sin (r);
real delta = dsin - rsin;
writefln ("%9.2f %30.24f %12.4g", r, rsin, dsin, delta);
}
}
```
$ dmd sinus.d decimal.git/libdecimal.a
sinus.d(12): Error: cannot implicitly convert expression
dsin.opBinary(rsin) of type Decimal!128 to real
I tried to change the subtraction to
```
real delta = dsin;
delta -= rsin;
```
getting
sinus_e1.d(12): Error: cannot implicitly convert expression dsin
of type Decimal!128 to real
Changes this into
```
real delta = dsin.to!real;
delta -= rsin;
```
sinus_e2.d(12): Error: template decimal.to cannot deduce function
from argument types !(real)(Decimal!128), candidates are:
decimal/package.d(5814): decimal.to(T, D)(auto ref const D
x, const RoundingMode mode) if (isIntegral!T && isDecimal!D)
decimal/package.d(5832): decimal.to(F, D)(auto ref const D
x, const RoundingMode mode) if (isFloatingPoint!F && isDecimal!D)
to no avail. Also
```
real delta = cast(real) dsin;
```
did not succeed:
decimal/package.d(933): Error: undefined identifier mode, did you
mean template modf(D)(auto ref const D x, ref D y) if
(isDecimal!D)?
sinus_e3.d(12): Error: template instance
decimal.Decimal!128.Decimal.opCast!real error instantiating
Also
```
real delta = dsin.to!(real, RoundingMode.tiesToEven);
```
ain't work:
sinus_e4.d(12): Error: template decimal.to cannot deduce function
from argument types !(real, cast(RoundingMode)0)(Decimal!128),
candidates are:
decimal/package.d(5814): decimal.to(T, D)(auto ref const D
x, const RoundingMode mode) if (isIntegral!T && isDecimal!D)
decimal/package.d(5832): decimal.to(F, D)(auto ref const D
x, const RoundingMode mode) if (isFloatingPoint!F && isDecimal!D)
How can I convert a decimalX to float/double/real?
