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-.file "significandf.s"
-
-
-// Copyright (c) 2000 - 2003, Intel Corporation
-// All rights reserved.
-//
-// Contributed 2000 by the Intel Numerics Group, Intel Corporation
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//
-// * Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimer in the
-// documentation and/or other materials provided with the distribution.
-//
-// * The name of Intel Corporation may not be used to endorse or promote
-// products derived from this software without specific prior written
-// permission.
-
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
-// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
-// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Intel Corporation is the author of this code, and requests that all
-// problem reports or change requests be submitted to it directly at
-// http://www.intel.com/software/products/opensource/libraries/num.htm.
-//
-// History
-//==============================================================
-// 02/02/00 Initial version
-// 02/03/00 Modified to improve speed
-// 05/31/00 Fixed bug when x a double-extended denormal
-// 05/20/02 Cleaned up namespace and sf0 syntax
-// 02/10/03 Reordered header: .section, .global, .proc, .align
-//
-// API
-//==============================================================
-// float significandf(float x)
-// Overview of operation
-//==============================================================
-// If x = sig * 2**n with 1 <= sig < 2
-// significandf returns sig
-//
-// predicate registers used:
-// p6, p7
-//
-// floating-point registers used:
-// f8, f9, f10
-
-.section .text
-GLOBAL_LIBM_ENTRY(significandf)
-
-// qnan snan inf norm unorm 0 -+
-// 1 1 1 0 0 1 11
-
-// f10 gets f8(sign) with f1(exp,significand)
-{ .mfi
- nop.m 999
- fmerge.s f10 = f8,f1
- nop.i 999
-}
-{ .mfi
- nop.m 999
- fnorm.s0 f9 = f8
- nop.i 999 ;;
-}
-
-// Test for denormal input
-{ .mfi
- nop.m 999
- fclass.m.unc p7,p0 = f8, 0x0b
- nop.i 999 ;;
-}
-
-// p6 = TRUE ==> x is not (nan,inf,0)
-// return sign(f8) exp(f1) significand(f8)
-// else x is (nan,inf,0)
-// return sign(f8) exp(f8) significand(f8), normalized.
-{ .mfi
- nop.m 999
- fclass.m.unc p0,p6 = f8, 0xe7
- nop.i 999 ;;
-}
-
-{ .mmb
- nop.m 999
- nop.m 999
-(p7) br.cond.spnt SIGNIFICAND_DENORM ;; // Branch if x denormal
-}
-
-{ .mfi
- nop.m 999
-(p6) fmerge.se f8 = f10,f8
- nop.i 999 ;;
-}
-
-{ .mfb
- nop.m 999
- fnorm.s.s0 f8 = f8
- br.ret.sptk b0 ;;
-}
-
-SIGNIFICAND_DENORM:
-// Here if x denorm
-{ .mfi
- nop.m 999
- fmerge.se f8 = f10,f9
- nop.i 999 ;;
-}
-
-// Check if fnorm(x) still denormal, means x double-extended denormal
-{ .mfi
- nop.m 999
- fclass.m.unc p7,p0 = f9, 0x0b
- nop.i 999 ;;
-}
-
-// This will be the final result unless x double-extended denormal
-{ .mfi
- nop.m 999
- fnorm.s.s0 f8 = f8
- nop.i 999 ;;
-}
-
-// If x double-extended denorm, then significand ok, but must merge in
-// correct signexp
-{ .mfi
- nop.m 999
-(p7) fmerge.se f8 = f10,f8
- nop.i 999 ;;
-}
-
-// Final normalization if x double-extended denorm
-{ .mfb
- nop.m 999
-(p7) fnorm.s.s0 f8 = f8
- br.ret.sptk b0 ;;
-}
-
-GLOBAL_LIBM_END(significandf)