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v?asinh

Compute the inverse hyperbolic sine of vector elements.

Interface Definition

C interface:

void vsasinh(const int len, const float* src, float* dst);

void vdasinh(const int len, const double* src, double* dst);

Fortran interface:

CALL VSASINH(LEN, SRC, DST);

CALL VDASINH(LEN, SRC, DST);

Parameters

Parameter

Type

Description

Input/Output

len

Integer

Number of elements in the input vector.

If len ≤ 0, the system displays a message indicating that the value of len is invalid.

Input

src
  • For vsasinh, src is of single-precision floating-point type.
  • For vdasinh, src is of double-precision floating-point type.

Input vector src with length len.

If the pointer is null, the system prompts a null pointer error.

Input

dst
  • For vsasinh, dst is of single-precision floating-point type.
  • For vdasinh, dst is of double-precision floating-point type.

Output vector dst with length len.

If the pointer is null, the system prompts a null pointer error.

Output

Return Value

  • The inverse hyperbolic sine y of the radian angle x is returned for each operation value.
  • If the input is +0, the return value is +0.
  • If the input is -0, the return value is -0.
  • If the input is ±∞, the return value is ±∞.
  • If the input is NaN, the return value is NaN.

Dependencies

C: "kvml.h"

Fortran: "kvml.f03"

Examples

C interface:

    int i, len = 4; 
    float src[len] = {0.0f, 1.0f, inf, nan}; 
    float* dst = (float*)malloc(sizeof(float) * len); 
    if (dst == NULL) { 
        printf("Malloc Failed!\n"); 
        return 0; 
    } 
    vsasinh(len, src, dst); 
    /** 
     *  Output dst: 
     *     0.0  0.881373587019543  inf  nan 
     * 
     */

Fortran interface:

    INTEGER :: LEN = 4 
    REAL(4) :: SRC(4)  
    REAL(4) :: DST(4) 
    DATA SRC/1, 2, 3, 4/ 
    CALL VSASINH(LEN, SRC, DST) 
    !  
    ! OUTPUT DST: 
    !     0.881373587, 1.443635475, 1.818446459, 2.094712547 
    !
Parent topic: Function Syntax