From 75302a4eecb3d82ca787c31e3d55d4fa7e2dc9d1 Mon Sep 17 00:00:00 2001
From: Serge <serge.vakulenko@gmail.com>
Date: Fri, 27 May 2022 17:14:04 -0700
Subject: [PATCH] Implement sqrtf() as a wrapper around sqrt(), for simplicity.

---
 src/cmd/awk/run.c   | 2 +-
 src/cmd/fold/fold.c | 5 +++++
 src/libm/sqrt.c     | 5 +++++
 target.mk           | 4 ++--
 4 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/cmd/awk/run.c b/src/cmd/awk/run.c
index 5195149..06498b4 100644
--- a/src/cmd/awk/run.c
+++ b/src/cmd/awk/run.c
@@ -810,7 +810,7 @@ obj fncn(a,n) node **a;
 	else if (t == FEXP)
 		u = exp(getfval(x.optr));
 	else if (t == FSQRT)
-		u = 0 /* TODO: sqrt(getfval(x.optr))*/;
+		u = sqrt(getfval(x.optr));
 	else
 		error(FATAL, "illegal function type %d", t);
 	tempfree(x);
diff --git a/src/cmd/fold/fold.c b/src/cmd/fold/fold.c
index cf7722e..6742331 100644
--- a/src/cmd/fold/fold.c
+++ b/src/cmd/fold/fold.c
@@ -36,9 +36,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #define	DEFLINEWIDTH	80
 
+void fold(int width);
+
+int
 main(argc, argv)
 	int argc;
 	char **argv;
@@ -91,6 +95,7 @@ main(argc, argv)
 	exit(0);
 }
 
+void
 fold(width)
 	register int width;
 {
diff --git a/src/libm/sqrt.c b/src/libm/sqrt.c
index 8c6bdc9..2058710 100644
--- a/src/libm/sqrt.c
+++ b/src/libm/sqrt.c
@@ -51,3 +51,8 @@ sqrt(arg)
 		temp = 0.5*(temp + arg/temp);
 	return(temp);
 }
+
+float sqrtf(float arg)
+{
+        return sqrt(arg);
+}
diff --git a/target.mk b/target.mk
index 2b30215..0f84ec0 100644
--- a/target.mk
+++ b/target.mk
@@ -38,10 +38,10 @@ ifeq ($(LLVMBIN),)
     $(error Unable to find any CLANG toolchain!)
 endif
 
-CC		= $(LLVMBIN)clang -target mipsel -mcpu=mips32r2 -mabi=o32 -mfloat-abi=soft \
+CC		= $(LLVMBIN)clang -target mipsel -mcpu=mips32r2 -mabi=o32 -msoft-float \
                   -fomit-frame-pointer -finline-hint-functions -I$(TOPSRC)/include \
                   -Wno-builtin-requires-header
-CXX             = $(LLVMBIN)clang++ -target mipsel -mcpu=mips32r2 -mabi=o32 -mfloat-abi=soft \
+CXX             = $(LLVMBIN)clang++ -target mipsel -mcpu=mips32r2 -mabi=o32 -msoft-float \
                   -fomit-frame-pointer -finline-hint-functions -I$(TOPSRC)/include
 LD		= $(LLVMBIN)ld.lld -m elf32ltsmip
 AR		= $(LLVMBIN)llvm-ar