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79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*******************************************************************
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Byte utilities
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(c) 1994, 1995 Innobase Oy
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Created 5/11/1994 Heikki Tuuri
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********************************************************************/
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#include "ut0byte.h"
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#ifdef UNIV_NONINL
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#include "ut0byte.ic"
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#endif
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#include "ut0sort.h"
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/* Zero value for a dulint */
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dulint ut_dulint_zero = {0, 0};
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/* Maximum value for a dulint */
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dulint ut_dulint_max = {0xFFFFFFFF, 0xFFFFFFFF};
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/****************************************************************
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Sort function for dulint arrays. */
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void
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ut_dulint_sort(dulint* arr, dulint* aux_arr, ulint low, ulint high)
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/*===============================================================*/
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{
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UT_SORT_FUNCTION_BODY(ut_dulint_sort, arr, aux_arr, low, high,
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ut_dulint_cmp);
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}
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/****************************************************************
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Copies a string to a memory location, setting characters to lower case. */
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void
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ut_cpy_in_lower_case(
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/*=================*/
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char* dest, /* in: destination */
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const char* source, /* in: source */
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ulint len) /* in: string length */
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{
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ulint i;
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for (i = 0; i < len; i++) {
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dest[i] = tolower(source[i]);
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}
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}
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/****************************************************************
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Compares two strings when converted to lower case. */
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int
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ut_cmp_in_lower_case(
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/*=================*/
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/* out: -1, 0, 1 if str1 < str2, str1 == str2,
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str1 > str2, respectively */
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const char* str1, /* in: string1 */
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const char* str2) /* in: string2 */
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{
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for (;;) {
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int c1, c2;
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if (!*str1) {
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return(*str2 ? -1 : 0);
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} else if (!*str2) {
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return 1;
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}
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c1 = tolower(*str1++);
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c2 = tolower(*str2++);
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if (c1 < c2) {
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return(-1);
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}
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if (c1 > c2) {
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return(1);
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}
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}
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return(0);
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}
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