diff options
Diffstat (limited to 'src/preamble.js')
| -rw-r--r-- | src/preamble.js | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/preamble.js b/src/preamble.js index d61a8ce5..e1036b8e 100644 --- a/src/preamble.js +++ b/src/preamble.js @@ -156,7 +156,7 @@ function __formatString() { while (curr != 0) { curr = HEAP[textIndex]; next = HEAP[textIndex+1]; - if (curr == '%'.charCodeAt(0) && ['d', 'f', '.'].indexOf(String.fromCharCode(next)) != -1) { + if (curr == '%'.charCodeAt(0) && ['d', 'u', 'f', '.'].indexOf(String.fromCharCode(next)) != -1) { var argText = String(arguments[argIndex]); // Handle very very simply formatting, namely only %.Xf if (next == '.'.charCodeAt(0)) { @@ -169,6 +169,8 @@ function __formatString() { argText += '00000000000'; // padding argText = argText.substr(0, dotIndex+1+limit); textIndex += 2; + } else if (next == 'u'.charCodeAt(0)) { + argText = String(unSign(arguments[argIndex], 32)); } argText.split('').forEach(function(chr) { ret.push(chr.charCodeAt(0)); @@ -260,5 +262,12 @@ function intArrayFromString(stringy) { return ret; } +// Converts a value we have as signed, into an unsigned value. For +// example, -1 in int32 would be a very large number as unsigned. +function unSign(value, bits) { + if (value >= 0) return value; + return 2*Math.abs(1 << (bits-1)) + value; +} + // === Body === |