github.com/afumu/libc@v0.0.6/musl/src/math/x32/fabsf.s (about)

     1  .global fabsf
     2  .type fabsf,@function
     3  fabsf:
     4  	mov $0x7fffffff,%eax
     5  	movq %rax,%xmm1
     6  	andps %xmm1,%xmm0
     7  	ret