acoshf

Applicability

Function Usage

Obtains the hyperbolic arc cosine of the input data.

Prototype

1

inline float acoshf(float x)

Parameters

Returns

Hyperbolic arc cosine of the input data.

• If x is inf, the return value is inf.
• If x is -inf, the return value is nan.
• If x is nan, the return value is nan.
• If x is 1, the return value is 0.
• If x is less than 1, the return value is nan.

Restrictions

For SIMT programming, this API is not supported.

The input data supported by this API is within the range of [1, 65504.0].

Header File to Be Included

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

1

#include "simt_api/math_functions.h"

Examples

1
2
3
4
5

__simt_vf__ __launch_bounds__(1024) inline void KernelAcosh(__gm__ float* dst, __gm__ float* x)
{
   int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = acoshf(x[idx]); // Obtain the hyperbolic arc cosine of the idxth element of the src source address.
}