v?expint1
Interface Definition
C interface:
void vsexpint1(const int len, const float* src, float* dst);
void vdexpint1(const int len, const double* src, double* 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 |
|
Input vector src with length len. If the pointer is null, the system prompts a null pointer error. |
Input |
dst |
|
Output vector dst with length len. If the pointer is null, the system prompts a null pointer error. |
Output |
Return Value
- Each operation value returns the exponential integral of x.
- For special values, see the following table.
Input Value (src)
Output Value (dst)
±0
inf
≥ 0x1p13
+0
<0
nan
nan
nan
Dependency
C: "kvml.h"
Example
C interface:
int i, len = 11;
float src[11] = {-100.0f, -1.0f, -0.0f, 0.0f, 0.3f, 0.5f, 1.0f, 100.0f, -INFINITY, INFINITY, NAN};
float* dst = (float*)malloc(sizeof(float) * len);
if (dst == NULL) {
printf("Malloc Failed!\n");
return 0;
}
vsexpint1(len, src, dst);
/**
* Output dst:
* nan nan inf inf 0.905677 0.559774 0.219384 0.000000 nan 0.000000 nan
*/
Parent topic: Function Syntax