Initial import

2020-06-15 07:18:57 -07:00
commit c91b3c5006
14915 changed files with 590219 additions and 0 deletions
--- a/libc/math/feclearexcept.S
+++ b/libc/math/feclearexcept.S
@@ -0,0 +1,20 @@
+.global feclearexcept
+.type feclearexcept,@function
+feclearexcept:
+	# maintain exceptions in the sse mxcsr, clear x87 exceptions
+	mov	%edi,%ecx
+	and	$0x3f,%ecx
+	fnstsw	%ax
+	test	%eax,%ecx
+	jz	1f
+	fnclex
+1:	stmxcsr -8(%rsp)
+	and	$0x3f,%eax
+	or	%eax,-8(%rsp)
+	test	%ecx,-8(%rsp)
+	jz	1f
+	not	%ecx
+	and	%ecx,-8(%rsp)
+	ldmxcsr	-8(%rsp)
+1:	xor	%eax,%eax
+	ret