bench: fix data generation in blas/ext/base sort benchmarks

[0PrashantYadav0]

Resolves None.

Description

What is the purpose of this pull request?

This pull request:

• fixes the rev_sorted_few_uniques benchmarks in the blas/ext/base/*sort* packages, which tested the outer loop counter (i % M) instead of the element index, so the generated arrays were never few-uniques
• uses len instead of iter in the rev_sorted_random benchmarks so the reverse-sorted data mirrors the sorted case

Related Issues

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No related issues.

Questions

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No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/dsort2hp	$\\color{green}639/639$ $\\color{green}+100.00\\%$	$\\color{green}67/67$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}639/639$ $\\color{green}+100.00\\%$
blas/ext/base/dsort2ins	$\\color{green}666/666$ $\\color{green}+100.00\\%$	$\\color{green}74/74$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}666/666$ $\\color{green}+100.00\\%$
blas/ext/base/dsort2sh	$\\color{green}551/551$ $\\color{green}+100.00\\%$	$\\color{green}53/53$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}551/551$ $\\color{green}+100.00\\%$
blas/ext/base/dsorthp	$\\color{green}461/461$ $\\color{green}+100.00\\%$	$\\color{green}36/36$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}461/461$ $\\color{green}+100.00\\%$
blas/ext/base/dsortins	$\\color{green}443/443$ $\\color{green}+100.00\\%$	$\\color{green}41/41$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}443/443$ $\\color{green}+100.00\\%$
blas/ext/base/dsortsh	$\\color{green}477/477$ $\\color{green}+100.00\\%$	$\\color{green}49/49$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}477/477$ $\\color{green}+100.00\\%$
blas/ext/base/gsort2hp	$\\color{green}498/498$ $\\color{green}+100.00\\%$	$\\color{green}52/52$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}498/498$ $\\color{green}+100.00\\%$
blas/ext/base/gsort2ins	$\\color{green}527/527$ $\\color{green}+100.00\\%$	$\\color{green}62/62$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}527/527$ $\\color{green}+100.00\\%$
blas/ext/base/gsort2sh	$\\color{green}408/408$ $\\color{green}+100.00\\%$	$\\color{green}37/37$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}408/408$ $\\color{green}+100.00\\%$
blas/ext/base/gsorthp	$\\color{green}430/430$ $\\color{green}+100.00\\%$	$\\color{green}51/51$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}430/430$ $\\color{green}+100.00\\%$
blas/ext/base/gsorthp-by	$\\color{green}473/473$ $\\color{green}+100.00\\%$	$\\color{green}37/37$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}473/473$ $\\color{green}+100.00\\%$
blas/ext/base/gsortins	$\\color{green}419/419$ $\\color{green}+100.00\\%$	$\\color{green}61/61$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}419/419$ $\\color{green}+100.00\\%$
blas/ext/base/gsortsh	$\\color{green}348/348$ $\\color{green}+100.00\\%$	$\\color{green}36/36$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}348/348$ $\\color{green}+100.00\\%$
blas/ext/base/ssort2hp	$\\color{green}639/639$ $\\color{green}+100.00\\%$	$\\color{green}67/67$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}639/639$ $\\color{green}+100.00\\%$
blas/ext/base/ssort2ins	$\\color{green}521/521$ $\\color{green}+100.00\\%$	$\\color{green}41/41$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}521/521$ $\\color{green}+100.00\\%$
blas/ext/base/ssort2sh	$\\color{green}551/551$ $\\color{green}+100.00\\%$	$\\color{green}53/53$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}551/551$ $\\color{green}+100.00\\%$
blas/ext/base/ssorthp	$\\color{green}461/461$ $\\color{green}+100.00\\%$	$\\color{green}36/36$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}461/461$ $\\color{green}+100.00\\%$
blas/ext/base/ssortins	$\\color{green}543/543$ $\\color{green}+100.00\\%$	$\\color{green}69/69$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}543/543$ $\\color{green}+100.00\\%$
blas/ext/base/ssortsh	$\\color{green}477/477$ $\\color{green}+100.00\\%$	$\\color{green}49/49$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}477/477$ $\\color{green}+100.00\\%$

The above coverage report was generated for the changes in this PR.

[kgryte]

LGTM. Thanks for the clean-up, @0PrashantYadav0!

[kgryte]

As the CI failure is expected, I'll go ahead and merge.