What does this Assembly snippet output?

1.global _main
2.align 2
3_main:
4    stp x29, x30, [sp, #-32]!
5    adrp x0, val@PAGE
6    add x0, x0, val@PAGEOFF
7    ldr d0, [x0]
8    fsqrt d0, d0
9    sub sp, sp, #16
10    str d0, [sp]
11    adrp x0, fmt@PAGE
12    add x0, x0, fmt@PAGEOFF
13    bl _printf
14    add sp, sp, #16
15    ldp x29, x30, [sp], #32
16    mov w0, #0
17    ret
18.section __DATA,__data
19.align 3
20val: .double 25.0
21.section __TEXT,__cstring
22fmt: .asciz "%g\n"