Xinje XDH Series User Manual

352
8-11 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
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Xinje XDH Series Specifications

General

Brand	Xinje
Model	XDH Series
Category	Network Hardware
Language	English