From 5d9a6b9939a5d9a3fea8cfb1f6d9b0b2691829b3 Mon Sep 17 00:00:00 2001
From: Daniel Falbel <dfalbel@gmail.com>
Date: Mon, 2 Feb 2026 15:57:45 -0300
Subject: [PATCH] Export torch_ldexp function

Add documentation and export for the ldexp function which multiplies
input by 2^other, useful for constructing floating point numbers from
mantissas and exponents.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 NAMESPACE              |  1 +
 R/gen-namespace-docs.R | 22 ++++++++++++++++++++++
 man/torch_ldexp.Rd     | 29 +++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+)
 create mode 100644 man/torch_ldexp.Rd

diff --git a/NAMESPACE b/NAMESPACE
index 4296a688b3..300f85e5a6 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -691,6 +691,7 @@ export(torch_kaiser_window)
 export(torch_kron)
 export(torch_kthvalue)
 export(torch_lcm)
+export(torch_ldexp)
 export(torch_le)
 export(torch_lerp)
 export(torch_less)
diff --git a/R/gen-namespace-docs.R b/R/gen-namespace-docs.R
index 85889971b2..9e2fdf9da8 100644
--- a/R/gen-namespace-docs.R
+++ b/R/gen-namespace-docs.R
@@ -6368,6 +6368,28 @@ NULL
 NULL
 
 
+#' Ldexp
+#'
+#' @section ldexp(input, other, out=NULL) -> Tensor :
+#'
+#' Multiplies `input` by \eqn{2^{other}}.
+#'
+#' \deqn{
+#'     \text{out}_i = \text{input}_i * 2^{\text{other}_i}
+#' }
+#'
+#' Typically this function is used to construct floating point numbers by multiplying
+#' mantissas in `input` with integral powers of two created from the exponents in `other`.
+#'
+#' @param self (Tensor) the tensor of mantissas
+#' @param other (Tensor) the tensor of exponents, must be an integer dtype
+#'
+#' @name torch_ldexp
+#'
+#' @export
+NULL
+
+
 #' Kaiser_window
 #'
 #' @section kaiser_window(window_length, periodic=TRUE, beta=12.0, *, dtype=None, layout=torch.strided, device=None, requires_grad=FALSE) -> Tensor :
diff --git a/man/torch_ldexp.Rd b/man/torch_ldexp.Rd
new file mode 100644
index 0000000000..523990578d
--- /dev/null
+++ b/man/torch_ldexp.Rd
@@ -0,0 +1,29 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/gen-namespace-docs.R, R/gen-namespace.R
+\name{torch_ldexp}
+\alias{torch_ldexp}
+\title{Ldexp}
+\usage{
+torch_ldexp(self, other)
+}
+\arguments{
+\item{self}{(Tensor) the tensor of mantissas}
+
+\item{other}{(Tensor) the tensor of exponents, must be an integer dtype}
+}
+\description{
+Ldexp
+}
+\section{ldexp(input, other, out=NULL) -> Tensor }{
+
+
+Multiplies \code{input} by \eqn{2^{other}}.
+
+\deqn{
+    \text{out}_i = \text{input}_i * 2^{\text{other}_i}
+}
+
+Typically this function is used to construct floating point numbers by multiplying
+mantissas in \code{input} with integral powers of two created from the exponents in \code{other}.
+}
+