Struct lhapdf::Pdf

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pub struct Pdf { /* private fields */ }

Expand description

Wrapper to an LHAPDF object of the type LHAPDF::PDF.

Implementations§

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impl Pdf

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pub fn with_lhaid(lhaid: i32) -> Result<Self>

Constructor. Create a new PDF with the given lhaid ID code.

pub fn with_setname_and_member(setname: &str, member: i32) -> Result<Self>

Constructor. Create a new PDF with the given PDF setname and member ID.

pub fn with_setname_and_nmem(setname_nmem: &str) -> Result<Self>

Create a new PDF with the given PDF set name and member ID as a single string.

The format of the setname_nmem string is / where must be parseable as a positive integer. The / character is not permitted in set names due to clashes with Unix filesystem path syntax.

If no / is given, member number 0 will be used.

pub fn xfx_q2(&self, id: i32, x: f64, q2: f64) -> f64

Get the PDF x * f(x) value at x and q2 for the given PDG ID.

Panics

If the value of either x or q2 is not within proper boundaries this method will panic.

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pub fn alphas_q2(&self, q2: f64) -> f64

Value of of the strong coupling at q2 used by this PDF.

Panics

If the value of q2 is not within proper boundaries this method will panic.

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pub fn set(&self) -> PdfSet

Get the info class that actually stores and handles the metadata.

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pub fn x_min(&mut self) -> f64

Minimum valid x value for this PDF.

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pub fn x_max(&mut self) -> f64

Maximum valid x value for this PDF.

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pub fn set_force_positive(&mut self, mode: i32)

Set whether the PDF will only return positive (definite) values or not.

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pub fn force_positive(&mut self) -> i32

Check whether the PDF is set to only return positive (definite) values or not.

This is to avoid overshooting in to negative values when interpolating/extrapolating PDFs that sharply decrease towards zero. 0 = unforced, 1 = forced positive, 2 = forced positive definite (>= 1e-10).

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