(b) Non-GAAP diluted net earnings per share reflects any dilutive effect of restricted stock awards, stock options and performance-based awards.

Use of non-GAAP financial measures

To supplement Hewlett Packard Enterprise’s condensed consolidated financial statement information presented on a GAAP basis, Hewlett Packard Enterprise provides revenue on a constant currency basis, revenue adjusted for divestitures and currency, non-GAAP operating expenses, non-GAAP operating profit, non-GAAP operating margin, non-GAAP income tax rate, non-GAAP net earnings from continuing operations, non-GAAP net (loss) earnings from discontinued operations, non-GAAP diluted net earnings per share from continuing operations, non-GAAP diluted net (loss) earnings per share from discontinued operations, gross cash, free cash flow, net capital expenditures, net debt, net cash, operating company net debt and operating company net cash financial measures. Hewlett Packard Enterprise also provides forecasts of non-GAAP diluted net earnings per share and free cash flow.

These non-GAAP financial measures are not computed in accordance with, or as an alternative to, generally accepted accounting principles in the United States. The GAAP measure most directly comparable to revenue on a constant currency basis is revenue. The GAAP measure most directly comparable to revenue adjusted for divestitures and currency is revenue. The GAAP measure most directly comparable to non-GAAP operating expense is total costs and expenses. The GAAP measure most directly comparable to non-GAAP operating profit is earnings from operations. The GAAP measure most directly comparable to non-GAAP operating margin is operating margin. The GAAP measure most directly comparable to non-GAAP income tax rate is income tax rate. The GAAP measure most directly comparable to non-GAAP net earnings from continuing operations is net (loss) earnings from continuing operations. The GAAP measure most directly comparable to non-GAAP net (loss) earnings from discontinued operations is net (loss) earnings from discontinued operations. The GAAP measure most directly comparable to non-GAAP diluted net earnings per share from continuing operations is diluted net (loss) earnings per share from continuing operations. The GAAP measure most directly comparable to non-GAAP diluted net (loss) earnings per share from discontinued operations is diluted net (loss) earnings per share from discontinued operations. The GAAP measure most directly comparable to gross cash is cash and cash equivalents. The GAAP measure most directly comparable to free cash flow is cash flow from operations. The GAAP measure most directly comparable to net capital expenditures is investment in property, plant and equipment. The GAAP measure most directly comparable to net debt and operating company net debt is total company debt. The GAAP measure most directly comparable to each of net cash and operating company net cash is cash and cash equivalents. Reconciliations of each of these non-GAAP financial measures to GAAP information are included in the tables above or elsewhere in the materials accompanying this news release.

Use and economic substance of non-GAAP financial measures used by Hewlett Packard Enterprise

Revenue on a constant currency basis assumes no change in the foreign exchange rate from the prior-year period. Revenue adjusted for divestitures and currency excludes revenue resulting from business divestitures in fiscal 2017 and 2016 and also assumes no change in the foreign exchange rate from the prior-year period. Non-GAAP operating expenses, non-GAAP operating profit, and non-GAAP operating margin are defined to exclude any charges relating to the amortization of intangible assets, restructuring charges, charges relating to the separation transactions, transformation costs, acquisition and other related charges and defined benefit plan settlement and remeasurement charges. Non-GAAP net earnings from continuing operations and non-GAAP diluted net earnings per share from continuing operations consist of net (loss) earnings or diluted net (loss) earnings per share excluding those same charges, as well as an adjustment to earnings in equity interests, tax indemnification adjustments, income tax valuation allowances and separation taxes, the impact of U.S. tax reform and excess tax benefit from stock-based compensation. Non-GAAP net (loss) earnings from discontinued operations and non-GAAP diluted net (loss) earnings per share from discontinued operations consist of net (loss) earnings from discontinued operations or diluted net (loss) earnings per share from discontinued operations excluding those same charges, as applicable to discontinued operations. In addition, non-GAAP net earnings from continuing operations, non-GAAP net (loss) earnings from discontinued operations, non-GAAP diluted net earnings per share from continuing operations and non-GAAP diluted net (loss) earnings per share from discontinued operations are adjusted by the amount of additional taxes or tax benefits associated with each non-GAAP item.

Hewlett Packard Enterprise’s management uses these non-GAAP financial measures for purposes of evaluating Hewlett Packard Enterprise’s historical and prospective financial performance, as well as Hewlett Packard Enterprise’s performance relative to its competitors. Hewlett Packard Enterprise’s management also uses these non-GAAP measures to further its own understanding of Hewlett Packard Enterprise’s segment operating performance. Hewlett Packard Enterprise believes that excluding the items mentioned above from these non-GAAP financial measures allows Hewlett Packard Enterprise’s management to better understand Hewlett Packard Enterprise’s consolidated financial performance in relation to the operating results of Hewlett Packard Enterprise’s segments, as Hewlett Packard Enterprise’s management does not believe that the excluded items are reflective of ongoing operating results. More specifically, Hewlett Packard Enterprise’s management excludes each of those items mentioned above for the following reasons:

• Hewlett Packard Enterprise incurs charges relating to the amortization of intangible assets. Those charges are included in Hewlett Packard Enterprise’s GAAP earnings from operations, operating margin, net (loss) earnings and diluted net (loss) earnings per share. Such charges are significantly impacted by the timing and magnitude of Hewlett Packard Enterprise’s acquisitions and any related impairment charges. Consequently, Hewlett Packard Enterprise excludes these charges for purposes of calculating these non-GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Restructuring charges are costs associated with a formal restructuring plan and are primarily related to (i) employee termination costs and benefits (ii) costs to vacate duplicative facilities and (iii) an accelerated employee stock compensation program. Hewlett Packard Enterprise excludes these restructuring costs (and any reversals of charges recorded in prior periods) for purposes of calculating these non-GAAP measures because it believes that these historical costs do not reflect expected future operating expenses and do not contribute to a meaningful evaluation of Hewlett Packard Enterprise’s current operating performance or comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Separation costs are expenses associated with HP Inc.’s (formerly known as “Hewlett-Packard Company” or “HP Co.”) separation into two independent publicly-traded companies and the spin-off and merger transactions of the Enterprise Services business with CSC ("Everett Transaction") and the Software business with Micro Focus (“Seattle Transaction”). The charges are primarily related to third-party consulting, contractor fees and other incremental costs incurred to complete the transactions. Hewlett Packard Enterprise excludes these separation costs for purposes of calculating these non-GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Hewlett Packard Enterprise incurs costs related to its acquisitions and divestitures, most of which are treated as non-cash or non-capitalized expenses. The charges are direct expenses such as professional fees and retention costs, as well as non-cash adjustments to the fair value of certain acquired assets such as inventory. Because non-cash or non-capitalized acquisition-related expenses are inconsistent in amount and frequency and are significantly impacted by the timing and nature of Hewlett Packard Enterprise’s acquisitions and divestitures, Hewlett Packard Enterprise believes that eliminating such expenses for purposes of calculating these non-GAAP measures facilitates a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s past operating performance.
• Transformation costs represent net costs related to the HPE Next initiative and include restructuring charges, program design and execution costs, costs incurred to transform Hewlett Packard Enterprise's IT infrastructure and gains from the sale of real-estate identified as part of the initiative. Hewlett Packard Enterprise believes that eliminating such expenses and gains for purposes of calculating these non-GAAP measures facilitates a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s past operating performance.
• Adjustment to earnings from equity interests includes the amortization of the basis difference in relation to the H3C divestiture and the resulting equity method investment in H3C. Hewlett Packard Enterprise believes that eliminating this amount for purposes of calculating non-GAAP operating profit facilitates a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Hewlett Packard Enterprise incurs defined benefit plan settlement and remeasurement charges relating to its defined pension plans. The charges are associated with the net settlement resulting from voluntary lump sum payments offered to certain terminated vested participants and remeasurement of plan assets in connection with the Everett and Seattle Transactions, resulting in a decrease to the net periodic pension expense. Hewlett Packard Enterprise excludes these charges for the purpose of calculating these non- GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Tax indemnification adjustments are related to changes in the indemnification positions between Hewlett Packard Enterprise and HP Inc., DXC and Micro Focus that are recorded by the Company as pre-tax income or expense and not considered tax expense. Hewlett Packard Enterprise excludes these charges and the associated tax impact for the purpose of calculating these non-GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• Valuation allowances and separation taxes represent tax amounts in connection with the spin-off of the enterprise services business, Everett SpinCo, Inc., and the software business, Seattle SpinCo, Inc. Since these charges do not represent ongoing expenses, Hewlett Packard Enterprise excludes these charges for the purpose of calculating these non-GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• As a result of the recently enacted U.S. tax reform, during the first quarter of fiscal 2018, Hewlett Packard Enterprise recorded an estimated tax benefit from the provisional application of the new tax rules including a lower federal tax rate to deferred tax assets and liabilities, partially offset by a provisional estimate for transition tax expense on accumulated non-U.S. undistributed earnings, and a benefit as a result of the liquidation of an insolvent non U.S. subsidiary. During the current quarter, the Company recorded SAB118 adjustments in connection with U.S. tax reform primarily related to transition tax. Since these adjustments represent a one-time charge and do not represent ongoing expenses, Hewlett Packard Enterprise excludes the charge for the purpose of calculating these non-GAAP measures to facilitate a more meaningful evaluation of the Company’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.
• During the first quarter of fiscal 2018, the Company adopted ASU 2016-09 on a prospective basis, except for the statement of cash flows for which the statement was retrospectively adopted for the prior comparative periods. This standard requires excess tax benefits or tax deficiencies associated with stock-based compensation to be recognized as a component of the provision for income taxes in the Statement of Earnings rather than additional paid-in capital in the Balance Sheet.  Since the benefit or deficiency is the outcome of Hewlett Packard Enterprise’s stock price at the time an award is converted to a share of Hewlett Packard Enterprise’s stock, Hewlett Packard Enterprise excludes these benefits or deficiencies for the purpose of calculating these non-GAAP measures to facilitate a more meaningful evaluation of Hewlett Packard Enterprise’s current operating performance and comparisons to Hewlett Packard Enterprise’s operating performance in other periods.