8f4f92db8f
The runtime implementations of quaternion division are incorrect when
calculating q/r with nonzero jmag(r) and either nonzero imag(q) or
kmag(q). Notably, the inverse 1/r is still calculated correctly
because imag(1) = kmag(1) = 0.
The mistake can be verified by calculating (a/b)*b which will be very
different from both a and a * (1/b) * b.
The compile-time constant folding is correct, see exact_value.cpp
in function exact_binary_operator_value -> ExactValue_Quaternion ->
Token_Quo.
quo256 :: proc(q, r: quaternion256) -> quaternion256 { return q/r }
a: quaternion256 : 3 + 5i + 7j + 11k
b: quaternion256 : 2 + 7i + 3j + 5k
c: quaternion256 : a/b
fmt.println("comp", abs((c*b) - a))
fmt.println("run ", abs(quo256(a,b)*b - a))
// both values should be very close to zero;
// without fix, only the first is
The Data-Oriented Language for Sane Software Development.
The Odin Programming Language
Odin is a general-purpose programming language with distinct typing, built for high performance, modern systems, and built-in data-oriented data types. The Odin Programming Language, the C alternative for the joy of programming.
Website: https://odin-lang.org/
package main
import "core:fmt"
main :: proc() {
program := "+ + * 😃 - /"
accumulator := 0
for token in program {
switch token {
case '+': accumulator += 1
case '-': accumulator -= 1
case '*': accumulator *= 2
case '/': accumulator /= 2
case '😃': accumulator *= accumulator
case: // Ignore everything else
}
}
fmt.printf("The program \"%s\" calculates the value %d\n",
program, accumulator)
}
Documentation
Getting Started
Instructions for downloading and installing the Odin compiler and libraries.
Nightly Builds
Get the latest nightly builds of Odin.
Learning Odin
Overview of Odin
An overview of the Odin programming language.
Frequently Asked Questions (FAQ)
Answers to common questions about Odin.
Packages
Documentation for all the official packages part of the core and vendor library collections.
Examples
Examples on how to write idiomatic Odin code. Shows how to accomplish specific tasks in Odin, as well as how to use packages from core and vendor.
Odin Documentation
Documentation for the Odin language itself.
Odin Discord
Get live support and talk with other Odin programmers on the Odin Discord.
Articles
The Odin Blog
The official blog of the Odin programming language, featuring announcements, news, and in-depth articles by the Odin team and guests.
Warnings
- The Odin compiler is still in development.