From b9f73e6a4dc6cfbea4e0f8dd906a4a95bf7f86e7 Mon Sep 17 00:00:00 2001
From: Justine Tunney <jtunney@gmail.com>
Date: Thu, 4 Mar 2021 07:54:41 -0800
Subject: [PATCH] Clarify APE self-modifying behavior in README

See #102
---
 README.md                      | 15 +++++++++++++--
 test/libc/tinymath/sinl_test.c | 18 ------------------
 2 files changed, 13 insertions(+), 20 deletions(-)

diff --git a/README.md b/README.md
index 89dda1dc7..aad80553b 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ libc](https://justine.lol/cosmopolitan/index.html) website. We also have
 ## Getting Started
 
 If you're doing your development work on Linux or BSD then you need just
-five files to get started:
+five files to get started. Here's what you do on Linux:
 
 ```sh
 wget https://justine.lol/cosmopolitan/cosmopolitan.zip
@@ -30,9 +30,20 @@ gcc -g -Os -static -nostdlib -nostdinc -fno-pie -no-pie -mno-red-zone \
   -o hello.com.dbg hello.c -fuse-ld=bfd -Wl,-T,ape.lds \
   -include cosmopolitan.h crt.o ape.o cosmopolitan.a
 objcopy -S -O binary hello.com.dbg hello.com
-./hello.com
 ```
 
+You now have a portable program! Your APE binary will assimilate itself
+as conventional residents of your platform after the first run, so it
+can be fast and efficient for subsequent executions.
+
+```sh
+./hello.com
+bash -c './hello.com'  # zsh/fish workaround: we upstream a patch!
+```
+
+So if you intend to copy the binary to Windows or Mac then please do
+that before you run it, not after.
+
 If you're developing on Windows or MacOS then you need to download an
 x86_64-pc-linux-gnu toolchain beforehand. See the [Compiling on
 Windows](https://justine.lol/cosmopolitan/windows-compiling.html)
diff --git a/test/libc/tinymath/sinl_test.c b/test/libc/tinymath/sinl_test.c
index 60bdf198f..bfa67bf1f 100644
--- a/test/libc/tinymath/sinl_test.c
+++ b/test/libc/tinymath/sinl_test.c
@@ -26,24 +26,6 @@
 #define sin(x)  sin(VEIL("x", (double)(x)))
 #define sinf(x) sinf(VEIL("x", (float)(x)))
 
-void SetUp(void) {
-  /* 8087 FPU Control Word
-      IM: Invalid Operation ───────────────┐
-      DM: Denormal Operand ───────────────┐│
-      ZM: Zero Divide ───────────────────┐││
-      OM: Overflow ─────────────────────┐│││
-      UM: Underflow ───────────────────┐││││
-      PM: Precision ──────────────────┐│││││
-     PC: Precision Control ────────┐  ││││││
-      {float,∅,double,long double} │  ││││││
-     RC: Rounding Control ───────┐ │  ││││││
-      {even, →-∞, →+∞, →0}       │┌┤  ││││││
-                                ┌┤││  ││││││
-                               d││││rr││││││*/
-  int x87cw = 0b0000000000000000001101100001;
-  asm volatile("fldcw\t%0" : /* no outputs */ : "m"(x87cw));
-}
-
 TEST(sinl, test) {
   EXPECT_STREQ("NAN", gc(xdtoal(sinl(NAN))));
   EXPECT_STREQ("-NAN", gc(xdtoal(sinl(+INFINITY))));