> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/8.4/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/304.md).

# set\_segm\_alignment

```
Change alignment of the segment
  ea      - any address in the segment
  align   - new alignment of the segment, one of sa... constants
Note: it is a macro

#define set_segm_alignment(ea, alignment) set_segm_attr(ea, SEGATTR_ALIGN, alignment)
        #define saAbs         0  // Absolute segment.
        #define saRelByte     1  // Relocatable, byte aligned.
        #define saRelWord     2  // Relocatable, word (2-byte, 16-bit) aligned.
        #define saRelPara     3  // Relocatable, paragraph (16-byte) aligned.
        #define saRelPage     4  // Relocatable, aligned on 256-byte boundary (a "page"
                                 // in the original Intel specification).
        #define saRelDble     5  // Relocatable, aligned on a double word (4-byte)
                                 // boundary. This value is used by the PharLap OMF for
                                 // the same alignment.
        #define saRel4K       6  // This value is used by the PharLap OMF for page (4K)
                                 // alignment. It is not supported by LINK.
        #define saGroup       7  // Segment group
        #define saRel32Bytes  8  // 32 bytes
        #define saRel64Bytes  9  // 64 bytes
        #define saRelQword   10  // 8 bytes
```


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