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// =============================================================================
//! - A collection of math constants
//!
//! # Metadata
//! - Copyright: © 1999 - 2022 [`CroftSoft Inc`]
//! - Author: [`David Wallace Croft`]
//! - Rust version: 2022-08-09
//! - Rust since: 2022-07-30
//! - Java version: 2002-01-27
//!
//! # History
//! - Adapted from the Java class com.croftsoft.core.math.MathConstants
//!   - In the Java-based [`CroftSoft Core Library`]
//!
//! [`CroftSoft Core Library`]: https://www.croftsoft.com/library/code/
//! [`CroftSoft Inc`]: https://www.croftsoft.com/
//! [`David Wallace Croft`]: https://www.croftsoft.com/people/david/
// =============================================================================

use core::f64::consts::TAU;

pub const DEGREES_PER_RADIAN: f64 = 360.0 / TAU;
pub const GOLDEN_RATIO: f64 = 1.618_033_988_749_895;
pub const SECONDS_PER_NANOSECOND: f64 = 0.000_000_001;
pub const MILLISECONDS_PER_DAY: u64 = 1_000 * 60 * 60 * 24;
pub const MILLISECONDS_PER_SECOND: u64 = 1_000;
pub const NANOSECONDS_PER_MICROSECOND: u64 = 1_000;
pub const NANOSECONDS_PER_MILLISECOND: u64 = 1_000_000;
pub const NANOSECONDS_PER_SECOND: u64 = 1_000_000_000;