v?modf
Interface Definition
C interface:
void vsmodf(const int len, const float* src, float* dst1, float* dst2);
void vdmodf(const int len, const double* src, double* dst1, double* dst2);
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 |
dst1 |
|
Output vector dst1 with length len. If the pointer is null, the system prompts a null pointer error. |
Output |
dst2 |
|
Output vector dst2 with length len. If the pointer is null, the system prompts a null pointer error. |
Output |
Return Value
- Each operation value returns the integer value and fraction part of x, which are stored in the memory pointed to by dst1 and dst2, respectively.
- For special values, see the following table.
Input Value (src)
Output Value (dst1)
Output Value (dst2)
±0
±0
±0
+inf
+inf
+0
-inf
-inf
-0
nan
nan
nan
Dependency
C: "kvml.h"
Example
C interface:
int i, len = 8;
float src[8] = {-1.5f, -0.0f, 0.0f, 1.0f, 1.5f, -INFINITY, INFINITY, NAN};
float* dst1 = (float*)malloc(sizeof(float) * len);
if (dst1 == NULL) {
printf("Malloc Failed!\n");
return 0;
}
float* dst2 = (float*)malloc(sizeof(float) * len);
if (dst2 == NULL) {
printf("Malloc Failed!\n");
return 0;
}
vsmodf(len, src, dst1, dst2);
/**
* Output dst:
* (-1.000000 -0.500000)(-0.000000 -0.000000)(0.000000 0.000000)(1.000000 0.000000)(1.000000 0.500000)(-inf -0.000000)(inf 0.000000)(nan nan)
*/