It seems like there is no maximum limit to a BigInt as per spec, which makes sense considering BigInts are supposed to be arbitrary-precision integers, whose “digits of precision are limited only by the available memory of the host system”. As for v8 specifically, according to this article on the v8 blog, the precision of … Read more
Use libgmp: GMP is a free library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating-point numbers. There is no practical limit to the precision except the ones implied by the available memory in the machine GMP runs on… Since version 6, GMP is distributed under the dual licenses, GNU LGPL v3 … Read more
BigInt is now a native JavaScript language feature. It’s at Stage 3 in the TC39 process and it’s shipping in V8 v6.7 and Chrome 67. To turn a string containing a valid numeric literal into a BigInt, use the global BigInt function: const string = ‘78099864177253771992779766288266836166272662’; BigInt(string); // 78099864177253771992779766288266836166272662n If you just want to hardcode … Read more
TLDR: Use [BigInt]::Parse or ‘literal’ syntax prior to Powershell Core 7.0; otherwise use the n suffix. The Problem – double literals When it comes to un-suffixed literals, Powershell will use the first type the value fits in. The order for integral literals is int, long, decimal and then double. From the documentation for Powershell 5.1 … Read more
mov + adc $-1, %eax is more efficient than xor-zero + setc + 3-component lea for both latency and uop count on most CPUs, and no worse on any still-relevant CPUs.1 This looks like a gcc missed optimization: it probably sees a special case and latches onto that, shooting itself in the foot and preventing … Read more
In case you don’t want to return a BigInt, then the following might work for you too: function log10(bigint) { if (bigint < 0) return NaN; const s = bigint.toString(10); return s.length + Math.log10(“0.” + s.substring(0, 15)) } function log(bigint) { return log10(bigint) * Math.log(10); } function natlog(bigint) { if (bigint < 0) return NaN; … Read more
Credits to http://moeffju.net/blog/using-bigint-columns-in-rails-migrations class CreateDemo < ActiveRecord::Migration def self.up create_table :demo, :id => false do |t| t.integer :id, :limit => 8 end end end See the option :id => false which disables the automatic creation of the id field The t.integer :id, :limit => 8 line will produce a 64 bit integer field
Actually gcc will use the carry automatically if you write your code carefully… Current GCC can optimize hiWord += (loWord < loAdd); into add/adc (x86’s add-with-carry). This optimization was introduced in GCC5.3. With separate uint64_t chunks in 64-bit mode: https://godbolt.org/z/S2kGRz. And the same thing in 32-bit mode with uint32_t chunks: https://godbolt.org/z/9FC9vc (editor’s note: Of course … Read more
Try converting it before summing. eg. SELECT SUM(CONVERT(bigint, columnname)) FROM tablename or SELECT SUM(CAST(columnname AS BIGINT)) FROM tablename
Not with built-in JSON.parse. You’ll need to parse it manually and treat values as string (if you want to do arithmetics with them there is bignumber.js) You can use Douglas Crockford JSON.js library as a base for your parser. EDIT2 ( 7 years after original answer ) – it might soon be possible to solve … Read more