[#OSSL_trace_get_category_num]
= OSSL_trace_get_category_num
:mrdocs:

Map a trace category name to its OSSL_TRACE_CATEGORY_* number.

== Synopsis

Declared in `<openssl/trace.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_trace_get_category_num(char const* name);
----

== Return Value

Category number, or ‐1 if `name` is unknown.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *name*
| Category name such as "TRACE", "TLS", or "ALL".
|===


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