Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

test/libc/tinymath/acos_test.c

@@ -17,10 +17,15 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/math.h"
+#include "libc/rand/rand.h"
 #include "libc/runtime/gc.internal.h"
+#include "libc/testlib/ezbench.h"
 #include "libc/testlib/testlib.h"
 #include "libc/x/x.h"
 
+double acos_(double) asm("acos");
+#define acos acos_
+
 TEST(acos, test) {
   EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", acos(0.))));
   EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", acos(-0.))));
@@ -38,3 +43,11 @@ TEST(acos, test) {
   EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", acos(__DBL_MIN__))));
   EXPECT_TRUE(isnan(acos(__DBL_MAX__)));
 }
+
+BENCH(acos, bench) {
+  EZBENCH2("acos(+0)", donothing, acos(0));
+  EZBENCH2("acos(-0)", donothing, acos(-0.));
+  EZBENCH2("acos(NAN)", donothing, acos(NAN));
+  EZBENCH2("acos(INFINITY)", donothing, acos(INFINITY));
+  EZBENCH_C("acos", _real1(vigna()), acos(_real1(vigna())));
+}