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70 lines
1.7 KiB
70 lines
1.7 KiB
//
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// Created by MightyPork on 2017/11/26.
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//
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// Those are low memory footprint implementations of some stdlib functions
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// taken from the AVR libc. They are used instead of newlib versions.
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//
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#ifndef GEX_AVRLIBC_H_H
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#define GEX_AVRLIBC_H_H
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#include <stdint.h>
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#include <stddef.h>
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extern volatile int32_t avrlibc_errno;
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/**
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* strtol() - parse integer number form string.
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* this is internally called by atol and atoi
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*
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* 0x is allowed for bases 0 and 16
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*
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* @param nptr - string to parse
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* @param endptr - NULL or pointer to string where the end will be stored (first bad char)
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* @param base - base 2, 10, 16.... 0 for auto
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* @return the number
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*/
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int32_t avr_strtol(const char *nptr, char **endptr, register int32_t base);
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/**
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* like strtol(), but unsigned (and hence higher max value)
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*
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* @param nptr - string to parse
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* @param endptr - NULL or pointer to string where the end will be stored (first bad char)
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* @param base - base 2, 10, 16.... 0 for auto
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* @return the number
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*/
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uint32_t avr_strtoul(const char *nptr, char **endptr, register int32_t base);
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/**
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* atol() - parse decimal long int from ASCII
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*
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* @param p - string
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* @return int, 0 on failure
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*/
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static inline int32_t avr_atol(const char *p)
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{
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return avr_strtol(p, (char **) NULL, 10);
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}
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/**
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* atoi() - parse decimal int from ASCII
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*
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* @param p - string
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* @return int, 0 on failure
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*/
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static inline int32_t avr_atoi(const char *p)
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{
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return avr_atol(p);
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}
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/**
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* Parse double from ASCII
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*
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* @param nptr - string to parse
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* @param endptr - NULL or pointer to string where the end will be stored (first bad char)
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* @return the number
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*/
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double avr_strtod (const char * nptr, char ** endptr);
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#endif //GEX_AVRLIBC_H_H
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