Module Name: src
Committed By: maya
Date: Sun Apr 14 19:25:27 UTC 2019
Modified Files:
src/lib/libc/arch/riscv/gdtoa: gd_qnan.h
Log Message:
Provide a definition of quiet NaN for RISC-V, and a reference to where
it comes from.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/lib/libc/arch/riscv/gdtoa/gd_qnan.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/libc/arch/riscv/gdtoa/gd_qnan.h
diff -u src/lib/libc/arch/riscv/gdtoa/gd_qnan.h:1.1 src/lib/libc/arch/riscv/gdtoa/gd_qnan.h:1.2
--- src/lib/libc/arch/riscv/gdtoa/gd_qnan.h:1.1 Fri Sep 19 17:36:25 2014
+++ src/lib/libc/arch/riscv/gdtoa/gd_qnan.h Sun Apr 14 19:25:27 2019
@@ -1,5 +1,19 @@
-/* $NetBSD: gd_qnan.h,v 1.1 2014/09/19 17:36:25 matt Exp $ */
+/* $NetBSD: gd_qnan.h,v 1.2 2019/04/14 19:25:27 maya Exp $ */
-#define f_QNAN 0x7fe00000
+/*
+ * The RISC-V Instruction Set Manual Volume I: User-Level ISA
+ * Document Version 2.2
+ *
+ * 8.3 NaN Generation and Propagation
+ *
+ * The canonical NaN has a positive sign and all significand bits clear except
+ * the MSB, aka the quiet bit.
+ */
+
+#define f_QNAN 0x7fc00000
#define d_QNAN0 0x0
-#define d_QNAN1 0x7ffc0000
+#define d_QNAN1 0x7ff80000
+#define ld_QNAN0 0x0
+#define ld_QNAN1 0x0
+#define ld_QNAN2 0x0
+#define ld_QNAN3 0x7fff8000
