ANSI C Stdlib Library
The mikroC PRO for PIC provides a set of standard ANSI C library functions of general utility.
- Not all of the standard functions have been included.
- The functions have been mostly implemented according to the ANSI C standard, but certain functions have been modified in order to facilitate PIC programming. Be sure to skim through the description before using standard C functions.
Library Dependency Tree
Library Functions
abs
Prototype |
int abs(int a); |
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Description |
Function returns the absolute (i.e. positive) value of |
Example |
result = abs(-12); // result = 12 |
atof
Prototype |
double atof(char *s); |
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Description |
Function converts the input string |
Example |
doub = atof("-1.23"); // doub = -1.23 |
atoi
Prototype |
int atoi(char *s); |
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Description |
Function converts the input string |
Example |
result = atoi("32000"); // result = 32000 |
atol
Prototype |
long atol(char *s); |
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Description |
Function converts the input string |
Example |
result = atol("-32560"); // result = -32560 |
div
Prototype |
div_t div(int number, int denom); |
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Description |
Function computes the result of division of the numerator |
Example |
dt = div(1234,100); |
ldiv
Prototype |
ldiv_t ldiv(long number, long denom); |
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Description |
Function is similar to the div function, except that the arguments and result structure members all have type Function computes the result of division of the numerator |
Example |
dl = ldiv(-123456, 1000); |
uldiv
Prototype |
uldiv_t uldiv(unsigned long number, unsigned long denom); |
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Description |
Function is similar to the div function, except that the arguments and result structure members all have type Function computes the result of division of the numerator |
Example |
dul = uldiv(123456,1000); |
labs
Prototype |
long labs(long x); |
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Description |
Function returns the absolute (i.e. positive) value of long integer |
Example |
result = labs(-2147483647); |
max
Prototype |
int max(int a, int b); |
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Description |
Function returns greater of the two integers, |
Example |
result = max(123,67); // function returns 123 |
min
Prototype |
int min(int a, int b); |
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Description |
Function returns lower of the two integers, |
Example |
result = min(123,67); // function returns 67 |
rand
Prototype |
int rand(); |
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Description |
Function returns a sequence of pseudo-random numbers between 0 and 32767. The function will always produce the same sequence of numbers unless srand is called to seed the start point. |
Example |
while(1) result = rand() ; |
srand
Prototype |
void srand(unsigned x); |
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Description |
Function uses |
Example |
srand(9); |
xtoi
Prototype |
unsigned xtoi(char *s); |
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Description |
Function converts the input string |
Example |
result = xtoi("1FF"); // result = 511 |
Div Structures
typedef struct divstruct { int quot; int rem; } div_t; typedef struct ldivstruct { long quot; long rem; } ldiv_t; typedef struct uldivstruct { unsigned long quot; unsigned long rem; } uldiv_t;
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