src/math/x86_64/fabs.s - 3p/sel4/musllibc - Git at Google

 .global fabs
 .type fabs,@function
 fabs:
 	xor %eax,%eax
 	dec %rax
 	shr %rax
 	movq %rax,%xmm1
 	andpd %xmm1,%xmm0
 	ret
	.global fabs
	.type fabs,@function
	fabs:
	xor %eax,%eax
	dec %rax
	shr %rax
	movq %rax,%xmm1
	andpd %xmm1,%xmm0
	ret