Evaluate the rank-r reconstruction at (x, y). No clamping; if (x, y) lies outside the grid the Hermite kernel extrapolates from the boundary cell, wh

Fast approximate variant of eval(a) — opt-in surrogate for sign-only callers (e.g. RegionAtlas curve_contains, which only needs to decide which side o

Try to populate all fields in the state objects

Format a number for C++ output, handling NaN and scientific notation

Get neighboring (alternate) cell indices, or nullopt if none exists

Query an environment variable and return in optional if present

Return the Gibbs energy in J/kg

Return the mass enthalpy in J/kg

Shared (T, w=ln rho) homotopy corrector: homotope (h,s) linearly from the anchor's values to the target with adaptive subdivision; the dp/drho|_T>0 gu

Return true if the input pair involves a mass-based quality (Qmass).

A simple wrapper around the plotting routines invert: which axes to invert could be 'X' or 'YZ' or ... draw: which lines to draw could b

Construct the water-heated n-Propane evaporator of the paper's Table 3. Matches the recovered oracle: the HOT stream (Water) carries mdot = 0.1 k

Get the mole fractions of the equilibrium liquid phase (but as a double for use in SWIG wrapper)

Get the mole fractions of the equilibrium vapor phase (but as a double for use in SWIG wrapper)

Compute specific entropy ! This function returns the specific entropy from the state specified by the properties input Must be re-implemented i

Parameters ---------- Ref : string The fluid name for the fluid that will be used to generate the saturation data ClassName

Set binary mixture string value

Set the mass fractions @param mass_fractions The vector of mass fractions of the components */

Not implemented, but don't throw any errors

Uses the Brent solver to find the roots of p(x_in,y_in)-z_in @param res Poly2DResidual object to calculate residuals and derivatives @param min double

Run `repeats` (update + rhomass) cycles and return the average wall-clock per call in nanoseconds. Uses volatile aggregation so the compiler can't op

Viscosity as a function of temperature, pressure and composition.

Helper: centralize text-matching logic for PropsSI and PhaseSI error handling