Skip to main content

Browse the archive

https://github.com/halide/Halide
19 April 2024, 08:20:39 UTC
Revision d76970aa081df7d30b43a22295b02be759aae93c authored by Steven Johnson on 09 February 2021, 22:32:19 UTC, committed by Steven Johnson on 09 February 2021, 22:32:19 UTC 
Fix apps/HelloPyTorch
1 parent fe0888b
Raw File
Tip revision: d76970aa081df7d30b43a22295b02be759aae93c authored by Steven Johnson on 09 February 2021, 22:32:19 UTC
Fix apps/HelloPyTorch
Tip revision: d76970a
Monotonic.h 
#ifndef HALIDE_MONOTONIC_H
#define HALIDE_MONOTONIC_H

/** \file
 *
 * Methods for computing whether expressions are monotonic
 */
#include <iostream>
#include <string>

#include "Expr.h"
#include "Scope.h"

namespace Halide {
namespace Internal {

/**
 * Detect whether an expression is monotonic increasing in a variable,
 * decreasing, or unknown.
 */
enum class Monotonic { Constant,
                       Increasing,
                       Decreasing,
                       Unknown };
Monotonic is_monotonic(const Expr &e, const std::string &var,
                       const Scope<Monotonic> &scope = Scope<Monotonic>::empty_scope());

/** Emit the monotonic class in human-readable form for debugging. */
std::ostream &operator<<(std::ostream &stream, const Monotonic &m);

void is_monotonic_test();

}  // namespace Internal
}  // namespace Halide

#endif
back to top