[#EC_get_builtin_curves]
= EC_get_builtin_curves
:mrdocs:

Copy built‐in elliptic‐curve descriptors into `r.`

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
size_t
EC_get_builtin_curves(
    EC_builtin_curve* r,
    size_t nitems);
----

== Return Value

Total number of built‐in curves (may exceed `nitems).`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *r*
| Array of EC_builtin_curve that receives up to `nitems` entries, or NULL to query only the count.
| *nitems*
| Capacity of `r` in elements; ignored when `r` is NULL.
|===


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