From: Taylor R Campbell <campbell@mumble.net>
Date: Tue, 11 Dec 2018 16:40:51 +0000 (+0000)
Subject: Add some more release notes.
X-Git-Tag: mit-scheme-pucked-10.1.9~3^2~47
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=80014f4b6460aec09becdf0cad79a680ba61e1c7;p=mit-scheme.git

Add some more release notes.
---

diff --git a/src/relnotes/bug-readexactinfnan b/src/relnotes/bug-readexactinfnan
new file mode 100644
index 000000000..f515bf0ee
--- /dev/null
+++ b/src/relnotes/bug-readexactinfnan
@@ -0,0 +1,4 @@
+Bug fix: The reader and string->number now reject `#e+inf.0', `#e+nan.0', &c.
+
+Infinities and NaNs are not exact numbers and as such there is no way
+to interpret them with the #e prefix.  (The #i prefix still works.)
diff --git a/src/relnotes/bug-sharedwrite b/src/relnotes/bug-sharedwrite
new file mode 100644
index 000000000..e18ada5c4
--- /dev/null
+++ b/src/relnotes/bug-sharedwrite
@@ -0,0 +1 @@
+Bug fix: The printer procedure now handles multiple back references.
diff --git a/src/relnotes/bug-sqrt b/src/relnotes/bug-sqrt
new file mode 100644
index 000000000..d0c5e3638
--- /dev/null
+++ b/src/relnotes/bug-sqrt
@@ -0,0 +1,3 @@
+Bug fix: The sqrt procedure now correctly propagates NaNs, handles
+complex numbers with infinities, and raises floating-point exceptions
+only where appropriate.
diff --git a/src/relnotes/nan-syntax b/src/relnotes/nan-syntax
new file mode 100644
index 000000000..4e3a9473c
--- /dev/null
+++ b/src/relnotes/nan-syntax
@@ -0,0 +1,8 @@
+The reader and printer now support notation for all distinct NaNs.
+
+The sequence is <sign> <type> "." <payload>, where <sign> is "+" or
+"-", <type> is "nan" for quiet NaNs and "snan" for signalling NaNs, and
+<payload> is an integer represented in the current radix.
+
+The notations +snan.0 and -snan.0 are forbidden because the bit pattern
+they would mean represents +inf.0 and -inf.0 instead.
diff --git a/src/relnotes/subnormal-operand b/src/relnotes/subnormal-operand
new file mode 100644
index 000000000..239aee18f
--- /dev/null
+++ b/src/relnotes/subnormal-operand
@@ -0,0 +1,2 @@
+The x86-specific floating-point subnormal operand exception is now
+supported, and can be tested and trapped on x86 systems.