gkquad 0.0.4

Numerical integration library for Rust
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use super::algorithm::*;
use super::common::{Integrand, IntegrationConfig, Range};

use crate::IntegrationResult;

/// Performs integration using `QAGS` algorithm,
/// which achieves great performance for many kinds of functions.
///
/// # Examples
///
/// ```
/// use gkquad::single::integral;
///
/// let result = integral(|x: f64| x.sqrt(), 1.0..2.0).estimate();
/// ```
#[inline]
pub fn integral<F: Integrand, I: Into<Range>>(mut f: F, range: I) -> IntegrationResult {
    QAGS::new().integrate(&mut f, &range.into(), &IntegrationConfig::default())
}

/// Performs the integration with custom configuration.
///
/// The algorithm will be automatically selected to achieve the greatest performance.
#[inline]
pub fn integral_with_config<F: Integrand, I: Into<Range>>(
    mut f: F,
    range: I,
    config: IntegrationConfig,
) -> IntegrationResult {
    AUTO::new().integrate(&mut f, &range.into(), &config)
}