From 3675a813c65178ae2d8a804622dff11d41709f68 Mon Sep 17 00:00:00 2001
From: David Harris <david_harris@hmc.edu>
Date: Sun, 27 Feb 2022 17:23:33 +0000
Subject: [PATCH] Linking against riscv-isa-sim SoftFloat library for RISC-V
 NaN behavior

---
 pipelined/src/fma/Makefile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pipelined/src/fma/Makefile b/pipelined/src/fma/Makefile
index 7ca0b292..4d0efe20 100644
--- a/pipelined/src/fma/Makefile
+++ b/pipelined/src/fma/Makefile
@@ -4,8 +4,12 @@ CC     = gcc
 CFLAGS = -O3
 LIBS   = -lm
 LFLAGS = -L. 
-IFLAGS = -I../../../addins/SoftFloat-3e/source/include/
-LIBS   = ../../../addins/SoftFloat-3e/build/Linux-x86_64-GCC/softfloat.a
+# Link against the riscv-isa-sim version of SoftFloat rather than 
+# the regular version to get RISC-V NaN behavior
+IFLAGS   = -I$(RISCV)/riscv-isa-sim/softfloat
+LIBS   = $(RISCV)/riscv-isa-sim/build/libsoftfloat.a
+#IFLAGS = -I../../../addins/SoftFloat-3e/source/include/
+#LIBS   = ../../../addins/SoftFloat-3e/build/Linux-x86_64-GCC/softfloat.a
 SRCS   = $(wildcard *.c)
 
 PROGS = $(patsubst %.c,%,$(SRCS))