Rickey
09dd996181
* Quick cleanup on bitset docs * Clang format blind.h/c * Replace `_` with `s_` for functions * Fix newline size for macros. * Fix format for ci * Add macro for "unused" attribute
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#ifndef UTIL_H
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#define UTIL_H
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#include <stdint.h>
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#define GBLA_UNUSED __attribute__((unused))
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static inline int get_digits(int n) // https://stackoverflow.com/questions/1068849/how-do-i-determine-the-number-of-digits-of-an-integer-in-c
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{
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if (n < 10) return 1;
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if (n < 100) return 2;
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if (n < 1000) return 3;
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if (n < 10000) return 4;
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if (n < 100000) return 5;
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if (n < 1000000) return 6;
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if (n < 10000000) return 7;
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if (n < 100000000) return 8;
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if (n < 1000000000) return 9;
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return 10;
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}
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static inline int get_digits_odd(int n)
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{
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if (n < 100) return 1;
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if (n < 10000) return 2;
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if (n < 1000000) return 3;
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if (n < 100000000) return 4;
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return 5;
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}
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static inline int get_digits_even(int n)
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{
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if (n < 10) return 1;
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if (n < 1000) return 2;
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if (n < 100000) return 3;
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if (n < 10000000) return 4;
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return 5;
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}
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#define UNDEFINED -1
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#define NUM_ELEM_IN_ARR(arr) (sizeof(arr) / sizeof((arr)[0]))
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#define INT_MAX_DIGITS 11 // strlen(str(INT_MAX)) = strlen("-2147483647")
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#define UINT_MAX_DIGITS 10 // strlen(str(UINT32_MAX)) = strlen("4294967295")
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#define UINT8_MAX_DIGITS 3 // strlen(str(UINT8_MAX)) = strlen("255")
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int int_arr_max(int int_arr[], int size);
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uint32_t u32_protected_add (uint32_t a, uint32_t b);
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uint16_t u16_protected_add (uint16_t a, uint16_t b);
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uint32_t u32_protected_mult(uint32_t a, uint32_t b);
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uint16_t u16_protected_mult(uint16_t a, uint16_t b);
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#endif // UTIL_H
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