Java Hangs When Converting 2.2250738585072012e-308 - Exploring Binary
Konstantin Preißer made an interesting discovery, after reading my article “PHP Hangs On Numeric Value 2.2250738585072011e-308”: Java — both its runtime and compiler — go into an infinite loop when converting the decimal number 2.2250738585072012e-308 to double-precision binary floating-point. This number is supposed to convert to 0x1p-1022, which is DBL_MIN; instead, Java gets stuck, oscillating
Exploring Binary - Binary Numbers, Binary Code, and Binary Logic
I was testing David Gay’s most recent fixes to strtod() with different rounding modes and discovered that Apple Clang C++ (Xcode) and Microsoft Visual Studio C++ produce incorrect results for round towards zero and round down modes: their strtod()s convert numbers greater than DBL_MAX to infinity, not DBL_MAX. At first I thought Gay’s strtod() was wrong, but Dave pointed out that the IEEE 754 spec
PHP Hangs On Numeric Value 2.2250738585072011e-308 - Exploring Binary
I stumbled upon a very strange bug in PHP; this statement sends it into an infinite loop: <?php $d = 2.2250738585072011e-308; ?> (The same thing happens if you write the number without scientific notation — 324 decimal places.) I hit this bug in the two places I tested for it: on Windows (PHP 5.3.1 under XAMPP 1.7.3), and on Linux (PHP Version 5.3.2-1ubuntu4.5) — both on an Intel Core Duo processo
1
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
