Lerp.h

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#ifndef HALIDE_LERP_H
#define HALIDE_LERP_H
 
/** \file
 * Defines methods for converting a lerp intrinsic into Halide IR.
 */
 
#include "Expr.h"
 
namespace Halide {
 
struct Target;
 
namespace Internal {
 
/** Build Halide IR that computes a lerp. Use by codegen targets that don't have
 * a native lerp. The lerp is done in the type of the zero value. The final_type
 * is a cast that should occur after the lerp. It's included because in some
 * cases you can incorporate a final cast into the lerp math. */
Expr lower_lerp(Type final_type, Expr zero_val, Expr one_val, const Expr &weight, const Target &target);
 
}  // namespace Internal
}  // namespace Halide
 
#endif