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CTFE-able poly #3021

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Merged
burner merged 1 commit into from
Feb 26, 2015
Merged

CTFE-able poly #3021

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42 changes: 22 additions & 20 deletions std/math.d
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Original file line number Diff line number Diff line change
Expand Up @@ -6240,14 +6240,7 @@ body
}
else
{
ptrdiff_t i = A.length - 1;
typeof(return) r = A[i];
while (--i >= 0)
{
r *= x;
r += A[i];
}
return r;
return polyImplBase(x, A);
}
}

Expand All @@ -6272,15 +6265,31 @@ body
assert(poly(x, pp) == y);
}

private real polyImpl(real x, in real[] A) @trusted pure nothrow @nogc
in
unittest {
static assert(poly(3.0, [1.0, 2.0, 3.0]) == 34);
}

private Unqual!(CommonType!(T1, T2)) polyImplBase(T1, T2)(T1 x, in T2[] A) @trusted pure nothrow @nogc
if (isFloatingPoint!T1 && isFloatingPoint!T2)
{
assert(A.length > 0);
ptrdiff_t i = A.length - 1;
typeof(return) r = A[i];
while (--i >= 0)
{
r *= x;
r += A[i];
}
return r;
}
body

private real polyImpl(real x, in real[] A) @trusted pure nothrow @nogc
{
version (D_InlineAsm_X86)
{
if(__ctfe)
{
return polyImplBase(x, A);
}
version (Windows)
{
// BUG: This code assumes a frame pointer in EBP.
Expand Down Expand Up @@ -6429,14 +6438,7 @@ body
}
else
{
ptrdiff_t i = A.length - 1;
real r = A[i];
while (--i >= 0)
{
r *= x;
r += A[i];
}
return r;
return polyImplBase(x, A);
}
}

Expand Down