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Convert field code to strict C89 (+ long long, +__int128)#193

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sipa merged 2 commits intobitcoin-core:masterfrom
gmaxwell:c89_field
Jan 24, 2015
Merged

Convert field code to strict C89 (+ long long, +__int128)#193
sipa merged 2 commits intobitcoin-core:masterfrom
gmaxwell:c89_field

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@gmaxwell
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Convert field code to strict C89 (+ long long, +__int128)

This makes the software more portable to embedded systems
and static analysis tools.

Sadly, it can't result in identical binaries because C99 mixed
declarations seem to make GCC emit superfluous stack-pointer
updates. The compiler is also somewhat dependent on the
declaration order.

( Builds on pull req #192 )

This makes the software more portable to embedded systems
 and static analysis tools.

Sadly, it can't result in identical binaries because C99 mixed
 declarations seem to make GCC emit superfluous stack-pointer
 updates. The compiler is also somewhat dependent on the
 declaration order.
@sipa
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sipa commented Jan 24, 2015

ACK

@sipa sipa merged commit 25b35c7 into bitcoin-core:master Jan 24, 2015
sipa added a commit that referenced this pull request Jan 24, 2015
25b35c7 Convert field code to strict C89 (+ long long, +__int128) (Gregory Maxwell)
3627437 C89 nits and dead code removal. (Gregory Maxwell)
real-or-random added a commit that referenced this pull request Feb 19, 2026
8354618 cmake: Set `LABELS` property for tests (Hennadii Stepanov)
29f26ec cmake: Integrate DiscoverTests and normalize test names (Hennadii Stepanov)
f95b263 cmake: Add DiscoverTests module (Hennadii Stepanov)
4ac6511 cmake, refactor: Deduplicate test-related code (Hennadii Stepanov)

Pull request description:

  This PR implements the idea suggested in #1734 (review) and is based on the work from bitcoin/bitcoin#33483.

  Here is an example of the `ctest` output:
  ```
  $ ctest --test-dir build -j $(nproc)
  Test project /home/hebasto/dev/secp256k1/secp256k1/build
          Start   1: secp256k1.noverify_tests.selftest_tests
          Start   2: secp256k1.noverify_tests.all_proper_context_tests
          Start   3: secp256k1.noverify_tests.all_static_context_tests
          Start   4: secp256k1.noverify_tests.deprecated_context_flags_test
  <snip>
  193/196 Test  #31: secp256k1.noverify_tests.ecmult_constants .........................   Passed    5.32 sec
  194/196 Test #184: secp256k1.tests.ellswift_xdh_correctness_tests ....................   Passed    5.62 sec
  195/196 Test #191: secp256k1.exhaustive_tests ........................................   Passed    6.97 sec
  196/196 Test #126: secp256k1.tests.ecmult_constants ..................................   Passed    9.60 sec

  100% tests passed, 0 tests failed out of 196

  Label Time Summary:
  secp256k1_example           =   0.02 sec*proc (5 tests)
  secp256k1_exhaustive        =   6.97 sec*proc (1 test)
  secp256k1_noverify_tests    =  23.77 sec*proc (95 tests)
  secp256k1_tests             =  43.67 sec*proc (95 tests)

  Total Test time (real) =  10.21 sec
  ```

  For comparison, here is the output for the master branch on the same machine:
  ```
  $ ctest --test-dir build -j $(nproc)
  Test project /home/hebasto/dev/secp256k1/secp256k1/build
      Start 1: secp256k1_noverify_tests
      Start 2: secp256k1_tests
      Start 3: secp256k1_exhaustive_tests
      Start 4: secp256k1_ecdsa_example
      Start 5: secp256k1_ecdh_example
      Start 6: secp256k1_schnorr_example
      Start 7: secp256k1_ellswift_example
      Start 8: secp256k1_musig_example
  1/8 Test #4: secp256k1_ecdsa_example ..........   Passed    0.00 sec
  2/8 Test #5: secp256k1_ecdh_example ...........   Passed    0.00 sec
  3/8 Test #6: secp256k1_schnorr_example ........   Passed    0.00 sec
  4/8 Test #7: secp256k1_ellswift_example .......   Passed    0.00 sec
  5/8 Test #8: secp256k1_musig_example ..........   Passed    0.00 sec
  6/8 Test #3: secp256k1_exhaustive_tests .......   Passed    6.26 sec
  7/8 Test #1: secp256k1_noverify_tests .........   Passed   14.31 sec
  8/8 Test #2: secp256k1_tests ..................   Passed   31.65 sec

  100% tests passed, 0 tests failed out of 8

  Total Test time (real) =  31.65 sec
  ```

  ---

  **New Feature:** As the number of tests has grown, the _labels_ have been introduced to simplify test management. Now, one can run:
  ```
  $ ctest --test-dir build -j $(nproc) -L example
  Test project /home/hebasto/dev/secp256k1/secp256k1/build
      Start 192: secp256k1.example.ecdsa
      Start 193: secp256k1.example.ecdh
      Start 194: secp256k1.example.schnorr
      Start 195: secp256k1.example.ellswift
      Start 196: secp256k1.example.musig
  1/5 Test #192: secp256k1.example.ecdsa ..........   Passed    0.00 sec
  2/5 Test #193: secp256k1.example.ecdh ...........   Passed    0.00 sec
  3/5 Test #194: secp256k1.example.schnorr ........   Passed    0.00 sec
  4/5 Test #195: secp256k1.example.ellswift .......   Passed    0.00 sec
  5/5 Test #196: secp256k1.example.musig ..........   Passed    0.00 sec

  100% tests passed, 0 tests failed out of 5

  Label Time Summary:
  secp256k1_example    =   0.01 sec*proc (5 tests)

  Total Test time (real) =   0.01 sec
  ```
  or
  ```
  $ ctest --test-dir build -j $(nproc) -LE tests
  Test project /home/hebasto/dev/secp256k1/secp256k1/build
      Start 192: secp256k1.example.ecdsa
      Start 193: secp256k1.example.ecdh
      Start 194: secp256k1.example.schnorr
      Start 195: secp256k1.example.ellswift
      Start 196: secp256k1.example.musig
      Start 191: secp256k1.exhaustive_tests
  1/6 Test #192: secp256k1.example.ecdsa ..........   Passed    0.00 sec
  2/6 Test #193: secp256k1.example.ecdh ...........   Passed    0.00 sec
  3/6 Test #194: secp256k1.example.schnorr ........   Passed    0.00 sec
  4/6 Test #195: secp256k1.example.ellswift .......   Passed    0.00 sec
  5/6 Test #196: secp256k1.example.musig ..........   Passed    0.00 sec
  6/6 Test #191: secp256k1.exhaustive_tests .......   Passed    6.19 sec

  100% tests passed, 0 tests failed out of 6

  Label Time Summary:
  secp256k1_example       =   0.01 sec*proc (5 tests)
  secp256k1_exhaustive    =   6.19 sec*proc (1 test)

  Total Test time (real) =   6.20 sec
  ```

ACKs for top commit:
  purpleKarrot:
    ACK 8354618
  furszy:
    Tested ACK 8354618

Tree-SHA512: 8c506ab08491aba4836b3058a8a09c929c6dd097c11e4e6f4deb20cf602285e73c3fd8a2c2040f7e92a058c7f8fc09752fa9de2ce80f7673adbdd505237ed262
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3 participants