Xinje XD5 User Manual

305
User can call it in the ladder chart editing window at any time.
8-8．Function Table
The default function library
Constant
Data
Description
_LOG2
(double)0.693147180559945309417232121458
Logarithm of 2
_LOG10
(double)2.3025850929940459010936137929093
Logarithm of 10
_SQRT2
(double)1.41421356237309504880168872421
Radical of 2
_PI
(double)3.1415926535897932384626433832795
PI
_PIP2
(double)1.57079632679489661923132169163975
PI/2
_PIP2x3
(double)4.71238898038468985769396507491925
PI*3/2
String Function
Description
void * memchr(const void *s, int c, size_t n);
Return the first c position among
n words before s position
int memcmp(const void *s1, const void *s2, size_t n);
Compare the first n words of
position s1 and s2
void * memcpy(void *s1, const void *s2, size_t n);
Copy n words from position s2 to
s1 and return s1
void * memset(void *s, int c, size_t n);
Replace the n words start from s
position with word c, and return to
position s
char * strcat(char *s1, const char *s2);
Connect string ct behind string s
char * strchr(const char *s, int c);
Return the first word c position in
string s
int strcmp(const char *s1, const char *s2);
Compare string s1 and s2
char * strcpy(char *s1, const char *s2);
Copy string s1 to string s2
Double-precision math
function
Single-precision math
function
Description
double acos(double x);
float acosf(float x);
Inverse cosine function
double asin(double x);
float asinf(float x);
Inverse sine function
double atan(double x);
float atanf(float x);
Inverse tangent function
double atan2(double y,
double x);
float atan2f(float y, float
x);
Inverse tangent value of
parameter (y/x)
double ceil(double x);
float ceilf(float x);
Return the smallest double
integer which is greater or
equal with parameter x

Xinje XD5 Specifications

General

Brand	Xinje
Model	XD5
Category	Controller
Language	English