Add fast NT scaling computations for W*z and W^{-1}*z

[govindchari]

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Benchmark Summary

• Baseline solved: 136 problems
• Diff branch solved: 135 problems

Differences in solved problems

• Baseline solved additional problems: QPILOTNO

Iteration regressions (diff took more iterations)

• BOYD2: diff=70, baseline=68
• QSIERRA: diff=25, baseline=24

Runtime regressions (> 5.0%)

• BOYD2: diff=4.1396s, baseline=3.8768s, Δ=+6.8%
• DPKLO1: diff=0.0001s, baseline=0.0001s, Δ=+6.4%
• QAFIRO: diff=0.0002s, baseline=0.0001s, Δ=+16.2%
• QBRANDY: diff=0.0037s, baseline=0.0034s, Δ=+6.5%
• QISRAEL: diff=0.0040s, baseline=0.0037s, Δ=+8.1%
• QPCBLEND: diff=0.0006s, baseline=0.0005s, Δ=+8.3%
• QSIERRA: diff=0.0335s, baseline=0.0313s, Δ=+7.1%

Runtime improvements (> 5.0%)

• CVXQP2_S: diff=0.0004s, baseline=0.0004s, Δ=-5.5%
• DUAL2: diff=0.0021s, baseline=0.0023s, Δ=-5.6%
• S268: diff=0.0000s, baseline=0.0000s, Δ=-6.2%

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Benchmark Summary

• Baseline solved: 136 problems
• Diff branch solved: 136 problems

Runtime regressions (> 5.0%)

• CVXQP2_S: diff=0.0004s, baseline=0.0004s, Δ=+6.3%
• DPKLO1: diff=0.0002s, baseline=0.0001s, Δ=+14.3%
• DUAL2: diff=0.0023s, baseline=0.0021s, Δ=+7.3%
• DUAL3: diff=0.0035s, baseline=0.0033s, Δ=+5.3%
• GENHS28: diff=0.0000s, baseline=0.0000s, Δ=+25.0%
• QGROW15: diff=0.0100s, baseline=0.0093s, Δ=+7.8%
• STCQP2: diff=0.1439s, baseline=0.1268s, Δ=+13.5%

Runtime improvements (> 5.0%)

• AUG3D: diff=0.0014s, baseline=0.0017s, Δ=-15.1%
• HS268: diff=0.0000s, baseline=0.0000s, Δ=-58.3%
• HS35: diff=0.0000s, baseline=0.0000s, Δ=-9.1%
• QSCSD1: diff=0.0023s, baseline=0.0025s, Δ=-7.4%
• QSCSD6: diff=0.0052s, baseline=0.0057s, Δ=-7.8%
• QSCSD8: diff=0.0087s, baseline=0.0096s, Δ=-9.2%

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Benchmark Summary

• Baseline solved: 136 problems
• Diff branch solved: 136 problems

Runtime regressions (> 5.0%)

• DPKLO1: diff=0.0002s, baseline=0.0001s, Δ=+10.7%
• QPTEST: diff=0.0000s, baseline=0.0000s, Δ=+9.1%
• QSHARE2B: diff=0.0010s, baseline=0.0010s, Δ=+5.9%

Runtime improvements (> 5.0%)

• CVXQP2_L: diff=22.6733s, baseline=26.4402s, Δ=-14.2%
• CVXQP2_M: diff=0.0463s, baseline=0.0497s, Δ=-7.0%
• HS51: diff=0.0000s, baseline=0.0000s, Δ=-25.0%
• HS53: diff=0.0000s, baseline=0.0000s, Δ=-5.6%