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memory_view.h: brush up the description in the comment

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Kenta Murata 2020-09-25 21:32:00 +09:00
parent 56012d2f7e
commit c04c34df47
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1 changed files with 7 additions and 2 deletions
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9
include/ruby/memory_view.h
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@ -54,8 +54,8 @@ typedef struct {
/* A string to describe the format of an element, or NULL for unsigned byte.
* The format string is a sequence the following pack-template specifiers:
*
* c, C, s, s!, S, S!, n, v, i, i!, I, I!, l, l!,
* L, L!, N, V, f, e, g, d, E, G, j, J, x
* c, C, s, s!, S, S!, n, v, i, i!, I, I!, l, l!, L, L!,
* N, V, f, e, g, q, q!, Q, Q!, d, E, G, j, J, x
*
* For example, "dd" for an element that consists of two double values,
* and "CCC" for an element that consists of three bytes, such as
@ -63,6 +63,11 @@ typedef struct {
*
* Also, the value endianness can be explicitly specified by '<' or '>'
* following a value type specifier.
*
* The items are packed contiguously. When you emulate the alignment of
* structure members, put '|' at the beginning of the format string,
* like "|iqc". On x86_64 Linux ABI, the size of the item by this format
* is 24 bytes instead of 13 bytes.
*/
const char *format;