internal/common.h: rename macro `(un)likely` to `ossl_(un)likely`

The macro was introduced in commit ed6dfd1e3694 without an
openssl-specific prefix as mandated by the coding style.

internal/common.h: rename macro `(un)likely` to `ossl_(un)likely`

The macro was introduced in commit ed6dfd1e3694 without an
openssl-specific prefix as mandated by the coding style.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
(Merged from https://github.com/openssl/openssl/pull/22603)

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rand uniform: fix likely usage

@mspncp noted that the condition should have been likely not unlikely.

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by

rand uniform: fix likely usage

@mspncp noted that the condition should have been likely not unlikely.

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22593)

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rand uniform: add comments outlining the algorithm

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Tomas

rand uniform: add comments outlining the algorithm

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22499)

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rand: implement an unbiased random integer from a range

Refer: https://github.com/apple/swift/pull/39143 for a description
of the algorithm.

It is optimal in the sense of having

rand: implement an unbiased random integer from a range

Refer: https://github.com/apple/swift/pull/39143 for a description
of the algorithm.

It is optimal in the sense of having:

* no divisions
* minimal number of blocks of random bits from the generator

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22499)

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