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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis testl $0x80000000,8(%esp) / ZF = 1 iff hi_32(sgnfcnd(x))'s msb = 0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis jz .chk_denormal_or_0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis notl %eax / not(bexp) = 0 iff bexp = all 1's
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis andl $0x00007fff,%eax / ZF <-- 1 iff not(bexp) = 0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis andl $0x00007fff,%eax / ZF <-- 1 iff bexp = 0 iff denormal or 0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis jnz .unsupported / jump if arg has unsupported format