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Add binding for GHCJS #16

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Add binding for GHCJS #16

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2 changes: 2 additions & 0 deletions double-conversion.cabal
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ library
double-conversion/src/fast-dtoa.cc
double-conversion/src/fixed-dtoa.cc
double-conversion/src/strtod.cc
js-sources:
jsbits/hs-double-conversion.js

if os(windows)
if arch(x86_64)
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119 changes: 119 additions & 0 deletions jsbits/hs-double-conversion.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,119 @@

var kToFixedLength =
1 + /* DoubleToStringConverter::kMaxFixedDigitsBeforePoint*/ 60 +
1 + /* DoubleToStringConverter::kMaxFixedDigitsAfterPoint*/ 60;


var kToShortestLength = 26;
var kToExponentialLength = /*DoubleToStringConverter::kMaxExponentialDigits*/ 120 + 8;
var kToPrecisionLength = /*DoubleToStringConverter::kMaxPrecisionDigits*/ 120 + 7;

function h$_hs_ToShortestLength() {
return kToShortestLength;
}

function h$_hs_ToFixedLength()
{
return kToFixedLength;
}

function h$_hs_ToExponentialLength()
{
return kToExponentialLength;
}

function h$_hs_ToPrecisionLength()
{
return kToPrecisionLength;
}

//--------------------

function h$_hs_Text_ToShortest(value, buf)
{
var conv = value.toString().replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u1[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}

function h$_hs_ToShortest(value, buf)
{
var conv = value.toString().replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u8[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}

//--------------------

function h$_hs_Text_ToFixed(value, buf, ndigits)
{
// negative digits differ for small values
if (ndigits > 60) return -1;
if (ndigits > 0)
{
var conv = value.toFixed(Math.min(20,ndigits))+ "0".repeat(Math.max(0,ndigits - 20));
Array.prototype.map.call(conv,function(c,i){ buf.u1[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}
else
{
var conv = value.toFixed(0).slice(0,ndigits) + "0".repeat(-ndigits);
Array.prototype.map.call(conv,function(c,i){ buf.u1[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}
}

function h$_hs_ToFixed(value, buf, unused, ndigits)
{
// negative digits differ for small values
if (ndigits > 60) return -1;
if (ndigits > 0)
{
var conv = value.toFixed(Math.min(20,ndigits))+ "0".repeat(Math.max(0,ndigits - 20));
Array.prototype.map.call(conv,function(c,i){ buf.u8[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}
else
{
var conv = value.toFixed(0).slice(0,ndigits) + "0".repeat(-ndigits);
Array.prototype.map.call(conv,function(c,i){ buf.u8[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}
}

//--------------------

function h$_hs_Text_ToExponential(value, buf, ndigits)
{

if (ndigits > 120 || ndigits < -1) return -1;
var conv = (ndigits == -1 ? value.toExponential() : value.toExponential(Math.min(20,ndigits)).replace("e",("0".repeat(Math.max(0,ndigits - 20))+"e"))).replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u1[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}

function h$_hs_ToExponential(value, buf, unused, ndigits)
{
if (ndigits > 120 || ndigits < -1) return -1;
var conv = (ndigits == -1 ? value.toExponential() : value.toExponential(Math.min(20,ndigits)).replace("e",("0".repeat(Math.max(0,ndigits - 20))+"e"))).replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u8[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}

//--------------------

function h$_hs_Text_ToPrecision(value, buf, ndigits)
{
if (ndigits > 120 || ndigits < 1) return -1;
var conv = (value.toPrecision(Math.min(21,ndigits))+ "0".repeat(Math.max(0,ndigits - 21))).replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u1[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}

function h$_hs_ToPrecision(value, buf, unused, ndigits)
{
if (ndigits > 120 || ndigits < 1) return -1;
var conv = (value.toPrecision(Math.min(21,ndigits))+ "0".repeat(Math.max(0,ndigits - 21))).replace("e+","e");
Array.prototype.map.call(conv,function(c,i){ buf.u8[i]=c.charCodeAt(0)});
return buf.len = conv.length;
}