comparison: docs/Writerside/topics/compare.h.md
docs/Writerside/topics/compare.h.md
- changeset 1694
- a2757c6427cc
- parent 1634
- 006e076a8db7
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| 1693:c2d05cf1a062 | 1694:a2757c6427cc |
|---|---|
| 6 - prefixed with `cx_vcmp` they are taking the values directly as arguments | 6 - prefixed with `cx_vcmp` they are taking the values directly as arguments |
| 7 - prefixed with `cx_cmp` the signature is designed to be compatible with the `cx_compare_func` function pointer type. | 7 - prefixed with `cx_cmp` the signature is designed to be compatible with the `cx_compare_func` function pointer type. |
| 8 | 8 |
| 9 ## Examples | 9 ## Examples |
| 10 | 10 |
| 11 In the following example we use `cx_cmp_int32` as compare function for a `CxList` of `int32_t` values. | 11 In the following example we use `cx_cmp_int32` as the compare function for a `CxList` of `int32_t` values. |
| 12 | 12 |
| 13 ```C | 13 ```C |
| 14 CxList *list = cxArrayListCreate( | 14 CxList *list = cxArrayListCreate( |
| 15 cxDefaultAllocator, // use the default allocator | 15 cxDefaultAllocator, // use the default allocator |
| 16 sizeof(int32_t), // the size of one element | 16 sizeof(int32_t), // the size of one element |
| 17 256 // reseve space for 256 elements | 17 256 // reseve space for 256 elements |
| 18 ); | 18 ); |
| 19 cxSetCompareFunc(list, cx_cmp_int32); // the compare function for the elements | 19 // set the compare function for the elements |
| 20 cxSetCompareFunc(list, cx_cmp_int32); | |
| 20 ``` | 21 ``` |
| 21 | 22 |
| 22 In the next example we simply want to compare two `double` values with rounding tolerance. | 23 In the next example we simply want to compare two `double` values with rounding tolerance. |
| 23 Note how the use of the `cx_vcmp` flavour makes it unnecessary to store the literal in a variable just to be able to take an address. | 24 Note how the use of the `cx_vcmp` flavor makes it unnecessary to store the literal in a variable just to be able to take an address. |
| 24 ```C | 25 ```C |
| 25 double x = ... | 26 double x = ... |
| 26 | 27 |
| 27 if (0 == cx_vcmp(x, 47.11)) { | 28 if (0 == cx_vcmp(x, 47.11)) { |
| 28 // do something when equal (except tolerance) | 29 // do something when equal (except tolerance) |
