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72 lines
1.6 KiB
72 lines
1.6 KiB
/**
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* Compatibility / portability funcitons and constants for the MicroBit DAL.
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*/
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#ifndef MICROBIT_COMPAT_H
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#define MICROBIT_COMPAT_H
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#include "ErrorNo.h"
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#define PI 3.14159265359
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/**
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* Determines the smallest of the two numbers
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* @param a the first number
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* @param b the second number
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* @return The value of a or b that is the smallest
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*/
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inline int min(int a, int b)
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{
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return (a < b ? a : b);
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}
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/**
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* Determines the largest of the two numbers
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* @param a the first number
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* @param b the second number
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* @return The value of a or b that is the largest
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*/
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inline int max(int a, int b)
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{
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return (a > b ? a : b);
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}
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/**
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* Sets a given area of memory to zero.
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*
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* @param a the pointer to the beginning of the memory to clear
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* @param b the number of bytes to clear.
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*/
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inline void *memclr(void *a, size_t b)
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{
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return memset(a,0,b);
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}
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/**
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* Determines if the given character is a printable ASCII/UTF8 decimal digit (0..9).
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* @param c the character to check
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* @return true if the character is a digit, false otherwise.
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*/
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inline bool isdigit(char c)
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{
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return (c > 47 && c < 58);
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}
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/**
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* Performs an in buffer reverse of a given char array
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* @param s the string to reverse.
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* @return MICROBIT_OK, or MICROBIT_INVALID_PARAMETER.
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*/
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int string_reverse(char *s);
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/**
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* Converts a given integer into a string representation.
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* @param n The number to convert.
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* @param s A pointer to the buffer in which to store the resulting string.
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* @return MICROBIT_OK, or MICROBIT_INVALID_PARAMETER.
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*/
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void itoa(int n, char *s);
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#endif
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