API review June 2022

Design/meetings/2022/api-design-2022-06.md

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+# Q# API Design Discussions / June 2022
+
+Reviewers (in order by username): @tcNickolas, @cgranade
+
+## Agenda
+
+- https://github.com/microsoft/QuantumLibraries/issues/593
+- https://github.com/microsoft/QuantumLibraries/issues/594
+- https://github.com/microsoft/QuantumLibraries/issues/595
+
+## Discussion
+
+### Comparison operations
+
+**Proposal**: https://github.com/microsoft/QuantumLibraries/issues/593
+
+**Reviews**:
+- @cgranade, *comment*: Does the `action` input to `ApplyControlledOnLessThanFxP` need to be adjointable? Should there be a separate `Adj` variant? We may also want to describe quickly how this proposal works with the outstanding proposal for numerics refactoring all-up (https://github.com/microsoft/QuantumLibraries/issues/337).
+* @tcNickolas, *approve*, left a comment
+> Please add a bullet point including your alias, your review result (*approve*, *reject*, *comment*), and a comment (optional when result is *approve*).  Alternatively, add a line to the PR discussion incl. a reference to this issue.
+
+**Consensus**:
+
+---
+
+### Functions for smallest and largest representable fixed point
+
+**Proposal**: https://github.com/microsoft/QuantumLibraries/issues/594
+
+**Reviews**: @cgranade, *approve*, same comment as above (https://github.com/microsoft/QuantumLibraries/issues/337).
+* @tcNickolas, *approve*, left a comment
+> Please add a bullet point including your alias, your review result (*approve*, *reject*, *comment*), and a comment (optional when result is *approve*).  Alternatively, add a line to the PR discussion incl. a reference to this issue.
+
+**Consensus**:
+
+---
+
+### Conversion functions for signed integers
+
+**Proposal**: https://github.com/microsoft/QuantumLibraries/issues/595
+
+**Reviews**:
+* @cgranade: *comment*. We should coordinate this with the Q# language discussion around bit vectors in general. @swernli and @bettinaheim in particular may want to provide input here.
+* @tcNickolas, *approve*, left a comment
+> Please add a bullet point including your alias, your review result (*approve*, *reject*, *comment*), and a comment (optional when result is *approve*).  Alternatively, add a line to the PR discussion incl. a reference to this issue.
+
+**Consensus**: