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fwd_prepare(): micro optimizations#4712

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rouault:fwd_prepare_micro_optim
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fwd_prepare(): micro optimizations#4712
rouault wants to merge 1 commit intoOSGeo:masterfrom
rouault:fwd_prepare_micro_optim

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@rouault rouault commented Mar 14, 2026

Before:

$ hyperfine 'bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213' Benchmark 1: bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213
  Time (mean ± σ):     716.0 ms ±   6.1 ms    [User: 711.7 ms, System: 3.4 ms]
  Range (min … max):   707.9 ms … 725.0 ms    10 runs

After:

$ hyperfine 'bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213' Benchmark 1: bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213
  Time (mean ± σ):     698.0 ms ±   6.7 ms    [User: 694.2 ms, System: 3.2 ms]
  Range (min … max):   688.3 ms … 708.5 ms    10 runs

Before:
$ hyperfine 'bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213'
Benchmark 1: bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213
  Time (mean ± σ):     716.0 ms ±   6.1 ms    [User: 711.7 ms, System: 3.4 ms]
  Range (min … max):   707.9 ms … 725.0 ms    10 runs

After:
$ hyperfine 'bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213'
Benchmark 1: bin/bench_proj_trans -p "+proj=utm +zone=31" 0.03490658503988659 0.8552113334772213
  Time (mean ± σ):     698.0 ms ±   6.7 ms    [User: 694.2 ms, System: 3.2 ms]
  Range (min … max):   688.3 ms … 708.5 ms    10 runs
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