---
name: "__gnu_parallel::_LoserTreePointerUnguardedBase"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/__gnu_parallel::_LoserTreePointerUnguardedBase"
---

# \_\_gnu\_parallel::\_LoserTreePointerUnguardedBase(3)

Unguarded loser tree, keeping only pointers to the elements in the tree structure.

## NAME

\_\_gnu\_parallel::\_LoserTreePointerUnguardedBase\< \_Tp, \_Compare \> - Unguarded loser tree, keeping only pointers to the elements in the tree structure.

## SYNOPSIS

\#include \<losertree.h\>

Inherited by **\_\_gnu\_parallel::\_LoserTreePointerUnguarded\< false, \_Tp, \_Compare \>**, **\_\_gnu\_parallel::\_LoserTreePointerUnguarded\< \_\_stable, \_Tp, \_Compare \>**, and **\_\_gnu\_parallel::\_LoserTreePointerUnguarded\< false, \_Tp, \_Compare \>**.

### Public Member Functions

**\_LoserTreePointerUnguardedBase** (unsigned int \_\_k, const \_Tp &\_\_sentinel, \_Compare \_\_comp=**std::less**\< \_Tp \>())\
 int **\_\_get\_min\_source** ()\
 void **\_\_insert\_start** (const \_Tp &\_\_key, int \_\_source, bool)\

### Protected Attributes

\_Compare **\_M\_comp**\
 unsigned int **\_M\_ik**\
 unsigned int **\_M\_k**\
 \_Loser \* **\_M\_losers**\
 unsigned int **\_M\_offset**\

## Detailed Description

### template\<typename \_Tp, typename \_Compare\>

class \_\_gnu\_parallel::\_LoserTreePointerUnguardedBase\< \_Tp, \_Compare \>"Unguarded loser tree, keeping only pointers to the elements in the tree structure.

No guarding is done, therefore not a single input sequence must run empty. This is a very fast variant.

## Author

Generated automatically by Doxygen for libstdc++ from the source code.