// File: /workspace/github_c_makefile_star2_O1/icebert[P]pblat/htslib/bgzf.c
// Function: bgzf_useek
int bgzf_useek(BGZF *fp, long uoffset, int where)
{
    if ( !fp->is_compressed )
    {
        if (hseek(fp->fp, uoffset, SEEK_SET) < 0)
        {
            fp->errcode |= BGZF_ERR_IO;
            return -1;
        }
        fp->block_length = 0;  // indicates current block has not been loaded
        fp->block_address = uoffset;
        fp->block_offset = 0;
        bgzf_read_block(fp);
        fp->uncompressed_address = uoffset;
        return 0;
    }

    if ( !fp->idx )
    {
        fp->errcode |= BGZF_ERR_IO;
        return -1;
    }

    // binary search
    int ilo = 0, ihi = fp->idx->noffs - 1;
    while ( ilo<=ihi )
    {
        int i = (ilo+ihi)*0.5;
        if ( uoffset < fp->idx->offs[i].uaddr ) ihi = i - 1;
        else if ( uoffset >= fp->idx->offs[i].uaddr ) ilo = i + 1;
        else break;
    }
    int i = ilo-1;
    if (hseek(fp->fp, fp->idx->offs[i].caddr, SEEK_SET) < 0)
    {
        fp->errcode |= BGZF_ERR_IO;
        return -1;
    }
    fp->block_length = 0;  // indicates current block has not been loaded
    fp->block_address = fp->idx->offs[i].caddr;
    fp->block_offset = 0;
    if ( bgzf_read_block(fp) < 0 ) return -1;
    if ( uoffset - fp->idx->offs[i].uaddr > 0 )
    {
        fp->block_offset = uoffset - fp->idx->offs[i].uaddr;
        assert( fp->block_offset <= fp->block_length );     // todo: skipped, unindexed, blocks
    }
    fp->uncompressed_address = uoffset;
    return 0;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %rbx
pushq %rax
movq %rsi, %r14
movq %rdi, %rbx
movl (%rdi), %ecx
testl $0x60000000, %ecx       # imm = 0x60000000
je 0x68e21
movq 0x48(%rbx), %rax
testq %rax, %rax
je 0x68e54
movl (%rax), %ecx
testl %ecx, %ecx
jle 0x68e5b
decl %ecx
movq 0x8(%rax), %rdx
xorl %esi, %esi
movsd 0x25fc5(%rip), %xmm0    # 0x8eda8
movl %esi, %edi
leal (%rdi,%rcx), %esi
xorps %xmm1, %xmm1
cvtsi2sd %esi, %xmm1
mulsd %xmm0, %xmm1
cvttsd2si %xmm1, %esi
movslq %esi, %rsi
movq %rsi, %r8
shlq $0x4, %r8
leal -0x1(%rsi), %r9d
incl %esi
cmpq %r14, (%rdx,%r8)
cmovbel %ecx, %r9d
cmoval %edi, %esi
movl %r9d, %ecx
cmpl %r9d, %esi
jle 0x68de3
decl %esi
movslq %esi, %r15
jmp 0x68e62
movq 0x38(%rbx), %rdi
xorl %ebp, %ebp
movq %r14, %rsi
xorl %edx, %edx
callq 0x6b2df
testq %rax, %rax
js 0x68eca
movq $0x0, 0x8(%rbx)
movq %r14, 0x10(%rbx)
movq %rbx, %rdi
callq 0x66fe4
movq %r14, 0x18(%rbx)
jmp 0x68ed2
orl $0x4, %ecx
movl %ecx, (%rbx)
jmp 0x68ecd
movq $-0x1, %r15
movq 0x38(%rbx), %rdi
movq 0x8(%rax), %rax
shlq $0x4, %r15
movq 0x8(%rax,%r15), %rsi
xorl %ebp, %ebp
xorl %edx, %edx
callq 0x6b2df
testq %rax, %rax
js 0x68eca
movl %ebp, 0x8(%rbx)
movq 0x48(%rbx), %rax
movq 0x8(%rax), %rax
movq 0x8(%rax,%r15), %rax
movq %rax, 0x10(%rbx)
movl %ebp, 0xc(%rbx)
movq %rbx, %rdi
callq 0x66fe4
testl %eax, %eax
js 0x68ecd
movq 0x48(%rbx), %rax
movq 0x8(%rax), %rax
movq (%rax,%r15), %rax
cmpq %rax, %r14
je 0x68ec2
movl %r14d, %ecx
subl %eax, %ecx
movl %ecx, 0xc(%rbx)
cmpl %ecx, 0x8(%rbx)
jl 0x68edf
movq %r14, 0x18(%rbx)
xorl %ebp, %ebp
jmp 0x68ed2
orb $0x4, (%rbx)
movl $0xffffffff, %ebp       # imm = 0xFFFFFFFF
movl %ebp, %eax
addq $0x8, %rsp
popq %rbx
popq %r14
popq %r15
popq %rbp
retq
leaq 0x30cc8(%rip), %rdi     # 0x99bae
leaq 0x30b88(%rip), %rsi     # 0x99a75
leaq 0x30cdf(%rip), %rcx     # 0x99bd3
movl $0x45d, %edx            # imm = 0x45D
callq 0x6460