noise-functions 0.8.4

A collection of fast and lightweight noise functions.
Documentation 
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#[cfg(feature = "libm")]
mod libm_math {
    #[inline(always)]
    pub(crate) fn abs(f: f32) -> f32 {
        libm::fabsf(f)
    }

    #[inline(always)]
    pub(crate) fn sqrt(f: f32) -> f32 {
        libm::sqrtf(f)
    }

    #[inline(always)]
    pub(crate) fn floor(f: f32) -> f32 {
        libm::floorf(f)
    }

    #[inline(always)]
    pub(crate) fn ceil(f: f32) -> f32 {
        libm::ceilf(f)
    }

    #[inline(always)]
    pub(crate) fn round(f: f32) -> f32 {
        libm::roundf(f)
    }

    #[inline(always)]
    pub(crate) fn sin(f: f32) -> f32 {
        libm::sinf(f)
    }

    #[inline(always)]
    pub(crate) fn cos(f: f32) -> f32 {
        libm::cosf(f)
    }

    #[inline(always)]
    pub(crate) fn tan(f: f32) -> f32 {
        libm::tanf(f)
    }

    #[inline(always)]
    pub(crate) fn min(a: f32, b: f32) -> f32 {
        libm::fminf(a, b)
    }

    #[inline(always)]
    pub(crate) fn max(a: f32, b: f32) -> f32 {
        libm::fmaxf(a, b)
    }

    #[inline(always)]
    pub(crate) fn pow(a: f32, b: f32) -> f32 {
        libm::powf(a, b)
    }

    #[inline(always)]
    pub(crate) fn mul_add(a: f32, b: f32, c: f32) -> f32 {
        a * b + c
    }
}

#[cfg(not(feature = "libm"))]
mod std_math {
    #[inline(always)]
    pub(crate) fn abs(f: f32) -> f32 {
        f32::abs(f)
    }

    #[inline(always)]
    pub(crate) fn sqrt(f: f32) -> f32 {
        f32::sqrt(f)
    }

    #[inline(always)]
    pub(crate) fn floor(f: f32) -> f32 {
        f32::floor(f)
    }

    #[inline(always)]
    pub(crate) fn ceil(f: f32) -> f32 {
        f32::ceil(f)
    }

    #[inline(always)]
    pub(crate) fn round(f: f32) -> f32 {
        f32::round(f)
    }

    #[inline(always)]
    pub(crate) fn sin(f: f32) -> f32 {
        f32::sin(f)
    }

    #[inline(always)]
    pub(crate) fn cos(f: f32) -> f32 {
        f32::cos(f)
    }

    #[inline(always)]
    pub(crate) fn tan(f: f32) -> f32 {
        f32::tan(f)
    }

    #[inline(always)]
    pub(crate) fn min(a: f32, b: f32) -> f32 {
        f32::min(a, b)
    }

    #[inline(always)]
    pub(crate) fn max(a: f32, b: f32) -> f32 {
        f32::max(a, b)
    }

    #[inline(always)]
    pub(crate) fn pow(a: f32, b: f32) -> f32 {
        f32::powf(a, b)
    }

    #[inline(always)]
    pub(crate) fn mul_add(a: f32, b: f32, c: f32) -> f32 {
        f32::mul_add(a, b, c)
    }
}

#[cfg(feature = "libm")]
pub(crate) use libm_math::*;

#[cfg(not(feature = "libm"))]
pub(crate) use std_math::*;

mod traits;

pub(crate) use traits::*;

pub(crate) const fn const_abs(f: f32) -> f32 {
    if f < 0.0 {
        -f
    } else {
        f
    }
}