[#OSSL_PARAM_get_double]
= OSSL_PARAM_get_double
:mrdocs:

Read a floating‐point value from an OSSL_PARAM into `val.`

== Synopsis

Declared in `<openssl/params.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_PARAM_get_double(
    xref:OSSL_PARAM.adoc[OSSL_PARAM] const* p,
    double* val);
----

== Return Value

1 on success, or 0 on type/size mismatch or other failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p*
| Parameter of floating‐point type to read.
| *val*
| Receives the converted double value on success.
|===


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