Add ndtri_exp Op

[prisharai]

Description

Adds an ndtri_exp Op (verified against scipy down to x = −1e6)

Motivated by pymc-devs/pymc#8354, where the TruncatedNormal icdf currently returns inf for extreme truncation bounds (lower=39)

Related Issue

• Closes #
• Related to Implement icdf for TruncatedNormal distribution pymc#8354

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

[ricardoV94]

Thanks, I did some minor changes in the pullback. Looks great otherwise

[ricardoV94]

Thanks