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help the compiler create more efficient code
Patch from Michael <virtual_worlds@gmx.de> Full text: As usual I have modified only minor things to remove warnigs when compiled as C++ code, have added some const-specifiers where possible to help the compiler create more efficient code and added some static-specifiers to make functions invisible to other modules.
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@ -62,18 +62,16 @@ extern "C" {
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extern int is_sane(const char test_string[], const unsigned char source[], const size_t length);
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extern void lookup(const char set_string[], const char *table[], const char data, char dest[]);
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extern int posn(const char set_string[], const char data);
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extern void expand(struct zint_symbol *symbol, const char data[]);
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extern int is_stackable(const int symbology);
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extern int is_extendable(const int symbology);
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extern int roundup(const float input);
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extern int module_is_set(const struct zint_symbol *symbol, const int y_coord, const int x_coord);
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extern void set_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
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extern void unset_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
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extern int istwodigits(const unsigned char source[], const int position);
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extern double froundup(const double input);
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extern int parunmodd(const unsigned char llyth);
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extern int utf8toutf16(struct zint_symbol *symbol, const unsigned char source[], int vals[], int *length);
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extern void set_minimum_height(struct zint_symbol *symbol, int min_height);
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extern void expand(struct zint_symbol *symbol, const char data[]);
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extern void unset_module(struct zint_symbol *symbol, const int y_coord, const int x_coord);
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extern int is_stackable(const int symbology);
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extern int is_extendable(const int symbology);
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extern int utf8toutf16(struct zint_symbol *symbol, const unsigned char source[], int vals[], size_t *length);
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extern void set_minimum_height(struct zint_symbol *symbol, const int min_height);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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