max GPU Virtual ISA NVIDIA

Maximum Arithmetic

max.type d, a, b;

Select the larger of two operands.

Encoding

PTX is a virtual instruction set. It has no single, stable native binary encoding — the compiler lowers this instruction to different native machine code depending on the selected NVIDIA target architecture (compute capability). This page intentionally shows no bit-diagram; see the target/version requirements below for what governs how this instruction compiles.
PTX ISA Version Introduced PTX ISA 1.0
Minimum Target sm_10

Syntax Forms

One mnemonic covers many type / state-space / scope / modifier combinations — each row below is an independently valid form.

Syntax Data Types State Space(s) Modifiers Min. Target Description
max.type d, a, b; s16, s32, s64, u16, u32, u64, f32, f64 sm_10 Integer or floating-point maximum.

Operands

  • d
    Destination register
  • a
    First operand
  • b
    Second operand

At a Glance

Data Types f32, f64, s16, s32, s64, u16, u32, u64

Reference

NVIDIA PTX ISA

Semantics

d = (a > b) ? a : b, with type-specific NaN-handling rules for floating-point forms.

Sources