umax

Applicability

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product/Atlas A3 inference product	x
Atlas A2 training product/Atlas A2 inference product	x
Atlas 200I/500 A2 inference product	x
Atlas inference product AI Core	x
Atlas inference product Vector Core	x
Atlas training product	x

Function Usage

Obtains the maximum value between two inputs.

$\text{[math]}$

Prototype

inline unsigned int umax(const unsigned int x, const unsigned int y)

Parameters

**Table 1** Parameters
Parameter	Input/Output	Description
x	Input	Source operand.
y	Input	Source operand.

Returns

Maximum value of the two input data elements.

Restrictions

For SIMT programming, this API is not supported.

Header File to Be Included

To use this API, the simt_api/math_functions.h header file must be included.

#include "simt_api/math_functions.h"

Examples

For SIMD and SIMT programming:

__simt_vf__ __launch_bounds__(1024) inline void KernelUmax(__gm__ unsigned int* dst, __gm__ unsigned int* out, __gm__ unsigned int* x)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = umax(x[idx], y[idx]);
}

Parent topic: Mathematical Functions