mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
692 lines
18 KiB
ArmAsm
692 lines
18 KiB
ArmAsm
.file "tancotf.s"
|
||
|
||
|
||
// Copyright (c) 2000 - 2005, Intel Corporation
|
||
// All rights reserved.
|
||
//
|
||
//
|
||
// 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
|
||
// 04/04/00 Unwind support added
|
||
// 12/27/00 Improved speed
|
||
// 02/21/01 Updated to call tanl
|
||
// 05/30/02 Improved speed, added cotf.
|
||
// 11/25/02 Added explicit completer on fnorm
|
||
// 02/10/03 Reordered header: .section, .global, .proc, .align
|
||
// 04/17/03 Eliminated redundant stop bits
|
||
// 03/31/05 Reformatted delimiters between data tables
|
||
//
|
||
// APIs
|
||
//==============================================================
|
||
// float tanf(float)
|
||
// float cotf(float)
|
||
//
|
||
// Algorithm Description for tanf
|
||
//==============================================================
|
||
// The tanf function computes the principle value of the tangent of x,
|
||
// where x is radian argument.
|
||
//
|
||
// There are 5 paths:
|
||
// 1. x = +/-0.0
|
||
// Return tanf(x) = +/-0.0
|
||
//
|
||
// 2. x = [S,Q]NaN
|
||
// Return tanf(x) = QNaN
|
||
//
|
||
// 3. x = +/-Inf
|
||
// Return tanf(x) = QNaN
|
||
//
|
||
// 4. x = r + (Pi/2)*N, N = RoundInt(x*(2/Pi)), N is even, |r|<Pi/4
|
||
// Return tanf(x) = P19(r) = A1*r + A3*r^3 + A5*r^5 + ... + A19*r^19 =
|
||
// = r*(A1 + A3*t + A5*t^2 + ... + A19*t^9) = r*P9(t), where t = r^2
|
||
//
|
||
// 5. x = r + (Pi/2)*N, N = RoundInt(x*(2/Pi)), N is odd, |r|<Pi/4
|
||
// Return tanf(x) = -1/r + P11(r) = -1/r + B1*r + B3*r^3 + ... + B11*r^11 =
|
||
// = -1/r + r*(B1 + B3*t + B5*t^2 + ... + B11*t^5) = -1/r + r*P11(t),
|
||
// where t = r^2
|
||
//
|
||
// Algorithm Description for cotf
|
||
//==============================================================
|
||
// The cotf function computes the principle value of the cotangent of x,
|
||
// where x is radian argument.
|
||
//
|
||
// There are 5 paths:
|
||
// 1. x = +/-0.0
|
||
// Return cotf(x) = +/-Inf and error handling is called
|
||
//
|
||
// 2. x = [S,Q]NaN
|
||
// Return cotf(x) = QNaN
|
||
//
|
||
// 3. x = +/-Inf
|
||
// Return cotf(x) = QNaN
|
||
//
|
||
// 4. x = r + (Pi/2)*N, N = RoundInt(x*(2/Pi)), N is odd, |r|<Pi/4
|
||
// Return cotf(x) = P19(-r) = A1*(-r) + A3*(-r^3) + ... + A19*(-r^19) =
|
||
// = -r*(A1 + A3*t + A5*t^2 + ... + A19*t^9) = -r*P9(t), where t = r^2
|
||
//
|
||
// 5. x = r + (Pi/2)*N, N = RoundInt(x*(2/Pi)), N is even, |r|<Pi/4
|
||
// Return cotf(x) = 1/r + P11(-r) = 1/r + B1*(-r) + ... + B11*(-r^11) =
|
||
// = 1/r - r*(B1 + B3*t + B5*t^2 + ... + B11*t^5) = 1/r - r*P11(t),
|
||
// where t = r^2
|
||
//
|
||
// We set p10 and clear p11 if computing tanf, vice versa for cotf.
|
||
//
|
||
//
|
||
// Registers used
|
||
//==============================================================
|
||
// Floating Point registers used:
|
||
// f8, input
|
||
// f32 -> f80
|
||
//
|
||
// General registers used:
|
||
// r14 -> r23, r32 -> r39
|
||
//
|
||
// Predicate registers used:
|
||
// p6 -> p13
|
||
//
|
||
// Assembly macros
|
||
//==============================================================
|
||
// integer registers
|
||
rExp = r14
|
||
rSignMask = r15
|
||
rRshf = r16
|
||
rScFctrExp = r17
|
||
rIntN = r18
|
||
rSigRcpPiby2 = r19
|
||
rScRshf = r20
|
||
rCoeffA = r21
|
||
rCoeffB = r22
|
||
rExpCut = r23
|
||
|
||
GR_SAVE_B0 = r33
|
||
GR_SAVE_PFS = r34
|
||
GR_SAVE_GP = r35
|
||
GR_Parameter_X = r36
|
||
GR_Parameter_Y = r37
|
||
GR_Parameter_RESULT = r38
|
||
GR_Parameter_Tag = r39
|
||
|
||
//==============================================================
|
||
// floating point registers
|
||
fScRcpPiby2 = f32
|
||
fScRshf = f33
|
||
fNormArg = f34
|
||
fScFctr = f35
|
||
fRshf = f36
|
||
fShiftedN = f37
|
||
fN = f38
|
||
fR = f39
|
||
fA01 = f40
|
||
fA03 = f41
|
||
fA05 = f42
|
||
fA07 = f43
|
||
fA09 = f44
|
||
fA11 = f45
|
||
fA13 = f46
|
||
fA15 = f47
|
||
fA17 = f48
|
||
fA19 = f49
|
||
fB01 = f50
|
||
fB03 = f51
|
||
fB05 = f52
|
||
fB07 = f53
|
||
fB09 = f54
|
||
fB11 = f55
|
||
fA03_01 = f56
|
||
fA07_05 = f57
|
||
fA11_09 = f58
|
||
fA15_13 = f59
|
||
fA19_17 = f60
|
||
fA11_05 = f61
|
||
fA19_13 = f62
|
||
fA19_05 = f63
|
||
fRbyA03_01 = f64
|
||
fB03_01 = f65
|
||
fB07_05 = f66
|
||
fB11_09 = f67
|
||
fB11_05 = f68
|
||
fRbyB03_01 = f69
|
||
fRbyB11_01 = f70
|
||
fRp2 = f71
|
||
fRp4 = f72
|
||
fRp8 = f73
|
||
fRp5 = f74
|
||
fY0 = f75
|
||
fY1 = f76
|
||
fD = f77
|
||
fDp2 = f78
|
||
fInvR = f79
|
||
fPiby2 = f80
|
||
//==============================================================
|
||
|
||
|
||
RODATA
|
||
.align 16
|
||
|
||
LOCAL_OBJECT_START(coeff_A)
|
||
data8 0x3FF0000000000000 // A1 = 1.00000000000000000000e+00
|
||
data8 0x3FD5555556BCE758 // A3 = 3.33333334641442641606e-01
|
||
data8 0x3FC111105C2DAE48 // A5 = 1.33333249100689099175e-01
|
||
data8 0x3FABA1F876341060 // A7 = 5.39701122561673229739e-02
|
||
data8 0x3F965FB86D12A38D // A9 = 2.18495194027670719750e-02
|
||
data8 0x3F8265F62415F9D6 // A11 = 8.98353860497717439465e-03
|
||
data8 0x3F69E3AE64CCF58D // A13 = 3.16032468108912746342e-03
|
||
data8 0x3F63920D09D0E6F6 // A15 = 2.38897844840557235331e-03
|
||
LOCAL_OBJECT_END(coeff_A)
|
||
|
||
LOCAL_OBJECT_START(coeff_B)
|
||
data8 0xC90FDAA22168C235, 0x3FFF // pi/2
|
||
data8 0x3FD55555555358DB // B1 = 3.33333333326107426583e-01
|
||
data8 0x3F96C16C252F643F // B3 = 2.22222230621336129239e-02
|
||
data8 0x3F61566243AB3C60 // B5 = 2.11638633968606896785e-03
|
||
data8 0x3F2BC1169BD4438B // B7 = 2.11748132564551094391e-04
|
||
data8 0x3EF611B4CEA056A1 // B9 = 2.10467959860990200942e-05
|
||
data8 0x3EC600F9E32194BF // B11 = 2.62305891234274186608e-06
|
||
data8 0xBF42BA7BCC177616 // A17 =-5.71546981685324877205e-04
|
||
data8 0x3F4F2614BC6D3BB8 // A19 = 9.50584530849832782542e-04
|
||
LOCAL_OBJECT_END(coeff_B)
|
||
|
||
|
||
.section .text
|
||
|
||
LOCAL_LIBM_ENTRY(cotf)
|
||
|
||
{ .mlx
|
||
getf.exp rExp = f8 // ***** Get 2<EFBFBD>17 * s + E
|
||
movl rSigRcpPiby2= 0xA2F9836E4E44152A // significand of 2/Pi
|
||
}
|
||
{ .mlx
|
||
addl rCoeffA = @ltoff(coeff_A), gp
|
||
movl rScRshf = 0x47e8000000000000 // 1.5*2^(63+63+1)
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
alloc r32 = ar.pfs, 0, 4, 4, 0
|
||
fclass.m p9, p0 = f8, 0xc3 // Test for x=nan
|
||
cmp.eq p11, p10 = r0, r0 // if p11=1 we compute cotf
|
||
}
|
||
{ .mib
|
||
ld8 rCoeffA = [rCoeffA]
|
||
mov rExpCut = 0x10009 // cutoff for exponent
|
||
br.cond.sptk Common_Path
|
||
}
|
||
;;
|
||
|
||
LOCAL_LIBM_END(cotf)
|
||
|
||
|
||
GLOBAL_IEEE754_ENTRY(tanf)
|
||
|
||
{ .mlx
|
||
getf.exp rExp = f8 // ***** Get 2<EFBFBD>17 * s + E
|
||
movl rSigRcpPiby2= 0xA2F9836E4E44152A // significand of 2/Pi
|
||
}
|
||
{ .mlx
|
||
addl rCoeffA = @ltoff(coeff_A), gp
|
||
movl rScRshf = 0x47e8000000000000 // 1.5*2^(63+63+1)
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
alloc r32 = ar.pfs, 0, 4, 4, 0
|
||
fclass.m p9, p0 = f8, 0xc3 // Test for x=nan
|
||
cmp.eq p10, p11 = r0, r0 // if p10=1 we compute tandf
|
||
}
|
||
{ .mib
|
||
ld8 rCoeffA = [rCoeffA]
|
||
mov rExpCut = 0x10009 // cutoff for exponent
|
||
nop.b 0
|
||
}
|
||
;;
|
||
|
||
// Below is common path for both tandf and cotdf
|
||
Common_Path:
|
||
{ .mfi
|
||
setf.sig fScRcpPiby2 = rSigRcpPiby2 // 2^(63+1)*(2/Pi)
|
||
fclass.m p8, p0 = f8, 0x23 // Test for x=inf
|
||
mov rSignMask = 0x1ffff // mask for sign bit
|
||
}
|
||
{ .mlx
|
||
setf.d fScRshf = rScRshf // 1.5*2^(63+63+1)
|
||
movl rRshf = 0x43e8000000000000 // 1.5 2^63 for right shift
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
and rSignMask = rSignMask, rExp // clear sign bit
|
||
(p10) fclass.m.unc p7, p0 = f8, 0x07 // Test for x=0 (for tanf)
|
||
mov rScFctrExp = 0xffff-64 // exp of scaling factor
|
||
}
|
||
{ .mfb
|
||
adds rCoeffB = coeff_B - coeff_A, rCoeffA
|
||
(p9) fma.s.s0 f8 = f8, f1, f8 // Set qnan if x=nan
|
||
(p9) br.ret.spnt b0 // Exit for x=nan
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
cmp.ge p6, p0 = rSignMask, rExpCut // p6 = (E => 0x10009)
|
||
(p8) frcpa.s0 f8, p0 = f0, f0 // Set qnan indef if x=inf
|
||
mov GR_Parameter_Tag = 227 // (cotf)
|
||
}
|
||
{ .mbb
|
||
ldfe fPiby2 = [rCoeffB], 16
|
||
(p8) br.ret.spnt b0 // Exit for x=inf
|
||
(p6) br.cond.spnt Huge_Argument // Branch if |x|>=2^10
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p11) fclass.m.unc p6, p0 = f8, 0x07 // Test for x=0 (for cotf)
|
||
nop.i 0
|
||
}
|
||
{ .mfb
|
||
nop.m 0
|
||
fnorm.s0 fNormArg = f8
|
||
(p7) br.ret.spnt b0 // Exit for x=0 (for tanf)
|
||
}
|
||
;;
|
||
|
||
{ .mmf
|
||
ldfpd fA01, fA03 = [rCoeffA], 16
|
||
ldfpd fB01, fB03 = [rCoeffB], 16
|
||
fmerge.s f10 = f8, f8 // Save input for error call
|
||
}
|
||
;;
|
||
|
||
{ .mmf
|
||
setf.exp fScFctr = rScFctrExp // get as real
|
||
setf.d fRshf = rRshf // get right shifter as real
|
||
(p6) frcpa.s0 f8, p0 = f1, f8 // cotf(+-0) = +-Inf
|
||
}
|
||
;;
|
||
|
||
{ .mmb
|
||
ldfpd fA05, fA07 = [rCoeffA], 16
|
||
ldfpd fB05, fB07 = [rCoeffB], 16
|
||
(p6) br.cond.spnt __libm_error_region // call error support if cotf(+-0)
|
||
}
|
||
;;
|
||
|
||
{ .mmi
|
||
ldfpd fA09, fA11 = [rCoeffA], 16
|
||
ldfpd fB09, fB11 = [rCoeffB], 16
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
fma.s1 fShiftedN = fNormArg,fScRcpPiby2,fScRshf // x*2^70*(2/Pi)+ScRshf
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
fms.s1 fN = fShiftedN, fScFctr, fRshf // N = Y*2^(-70) - Rshf
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
.pred.rel "mutex", p10, p11
|
||
{ .mfi
|
||
getf.sig rIntN = fShiftedN // get N as integer
|
||
(p10) fnma.s1 fR = fN, fPiby2, fNormArg // R = x - (Pi/2)*N (tanf)
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p11) fms.s1 fR = fN, fPiby2, fNormArg // R = (Pi/2)*N - x (cotf)
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mmi
|
||
ldfpd fA13, fA15 = [rCoeffA], 16
|
||
ldfpd fA17, fA19 = [rCoeffB], 16
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
Return_From_Huges:
|
||
{ .mfi
|
||
nop.m 0
|
||
fma.s1 fRp2 = fR, fR, f0 // R^2
|
||
(p11) add rIntN = 0x1, rIntN // N = N + 1 (cotf)
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
frcpa.s1 fY0, p0 = f1, fR // Y0 ~ 1/R
|
||
tbit.z p8, p9 = rIntN, 0 // p8=1 if N is even
|
||
}
|
||
;;
|
||
|
||
// Below are mixed polynomial calculations (mixed for even and odd N)
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fB03_01 = fRp2, fB03, fB01 // R^2*B3 + B1
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
fma.s1 fRp4 = fRp2, fRp2, f0 // R^4
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA15_13 = fRp2, fA15, fA13 // R^2*A15 + A13
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA19_17 = fRp2, fA19, fA17 // R^2*A19 + A17
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA07_05 = fRp2, fA07, fA05 // R^2*A7 + A5
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA11_09 = fRp2, fA11, fA09 // R^2*A11 + A9
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fB07_05 = fRp2, fB07, fB05 // R^2*B7 + B5
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fB11_09 = fRp2, fB11, fB09 // R^2*B11 + B9
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fnma.s1 fD = fR, fY0, f1 // D = 1 - R*Y0
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA03_01 = fRp2, fA03, fA01 // R^2*A3 + A1
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
fma.s1 fRp8 = fRp4, fRp4, f0 // R^8
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
fma.s1 fRp5 = fR, fRp4, f0 // R^5
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA11_05 = fRp4, fA11_09, fA07_05 // R^4*(R^2*A11 + A9) + ...
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.s1 fA19_13 = fRp4, fA19_17, fA15_13 // R^4*(R^2*A19 + A17) + ..
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fB11_05 = fRp4, fB11_09, fB07_05 // R^4*(R^2*B11 + B9) + ...
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fRbyB03_01 = fR, fB03_01, f0 // R*(R^2*B3 + B1)
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fY1 = fY0, fD, fY0 // Y1 = Y0*D + Y0
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.s1 fDp2 = fD, fD, f0 // D^2
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
// R^8*(R^6*A19 + R^4*A17 + R^2*A15 + A13) + R^6*A11 + R^4*A9 + R^2*A7 + A5
|
||
(p8) fma.d.s1 fA19_05 = fRp8, fA19_13, fA11_05
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
(p8) fma.d.s1 fRbyA03_01 = fR, fA03_01, f0 // R*(R^2*A3 + A1)
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
(p9) fma.d.s1 fInvR = fY1, fDp2, fY1 // 1/R = Y1*D^2 + Y1
|
||
nop.i 0
|
||
}
|
||
{ .mfi
|
||
nop.m 0
|
||
// R^5*(R^6*B11 + R^4*B9 + R^2*B7 + B5) + R^3*B3 + R*B1
|
||
(p9) fma.d.s1 fRbyB11_01 = fRp5, fB11_05, fRbyB03_01
|
||
nop.i 0
|
||
}
|
||
;;
|
||
|
||
.pred.rel "mutex", p8, p9
|
||
{ .mfi
|
||
nop.m 0
|
||
// Result = R^5*(R^14*A19 + R^12*A17 + R^10*A15 + ...) + R^3*A3 + R*A1
|
||
(p8) fma.s.s0 f8 = fRp5, fA19_05, fRbyA03_01
|
||
nop.i 0
|
||
}
|
||
{ .mfb
|
||
nop.m 0
|
||
// Result = -1/R + R^11*B11 + R^9*B9 + R^7*B7 + R^5*B5 + R^3*B3 + R*B1
|
||
(p9) fnma.s.s0 f8 = f1, fInvR, fRbyB11_01
|
||
br.ret.sptk b0 // exit for main path
|
||
}
|
||
;;
|
||
|
||
GLOBAL_IEEE754_END(tanf)
|
||
libm_alias_float_other (__tan, tan)
|
||
|
||
|
||
LOCAL_LIBM_ENTRY(__libm_callout)
|
||
Huge_Argument:
|
||
.prologue
|
||
|
||
{ .mfi
|
||
nop.m 0
|
||
fmerge.s f9 = f0,f0
|
||
.save ar.pfs,GR_SAVE_PFS
|
||
mov GR_SAVE_PFS=ar.pfs
|
||
}
|
||
;;
|
||
|
||
{ .mfi
|
||
mov GR_SAVE_GP=gp
|
||
nop.f 0
|
||
.save b0, GR_SAVE_B0
|
||
mov GR_SAVE_B0=b0
|
||
}
|
||
|
||
.body
|
||
{ .mmb
|
||
nop.m 999
|
||
nop.m 999
|
||
(p10) br.cond.sptk.many call_tanl ;;
|
||
}
|
||
|
||
// Here if we should call cotl (p10=0, p11=1)
|
||
{ .mmb
|
||
nop.m 999
|
||
nop.m 999
|
||
br.call.sptk.many b0=__libm_cotl# ;;
|
||
}
|
||
|
||
{ .mfi
|
||
mov gp = GR_SAVE_GP
|
||
fnorm.s.s0 f8 = f8
|
||
mov b0 = GR_SAVE_B0
|
||
}
|
||
;;
|
||
|
||
{ .mib
|
||
nop.m 999
|
||
mov ar.pfs = GR_SAVE_PFS
|
||
br.ret.sptk b0
|
||
;;
|
||
}
|
||
|
||
// Here if we should call tanl (p10=1, p11=0)
|
||
call_tanl:
|
||
{ .mmb
|
||
nop.m 999
|
||
nop.m 999
|
||
br.call.sptk.many b0=__libm_tanl# ;;
|
||
}
|
||
|
||
{ .mfi
|
||
mov gp = GR_SAVE_GP
|
||
fnorm.s.s0 f8 = f8
|
||
mov b0 = GR_SAVE_B0
|
||
}
|
||
;;
|
||
|
||
{ .mib
|
||
nop.m 999
|
||
mov ar.pfs = GR_SAVE_PFS
|
||
br.ret.sptk b0
|
||
;;
|
||
}
|
||
|
||
LOCAL_LIBM_END(__libm_callout)
|
||
|
||
.type __libm_tanl#,@function
|
||
.global __libm_tanl#
|
||
.type __libm_cotl#,@function
|
||
.global __libm_cotl#
|
||
|
||
|
||
LOCAL_LIBM_ENTRY(__libm_error_region)
|
||
.prologue
|
||
|
||
// (1)
|
||
{ .mfi
|
||
add GR_Parameter_Y=-32,sp // Parameter 2 value
|
||
nop.f 0
|
||
.save ar.pfs,GR_SAVE_PFS
|
||
mov GR_SAVE_PFS=ar.pfs // Save ar.pfs
|
||
}
|
||
{ .mfi
|
||
.fframe 64
|
||
add sp=-64,sp // Create new stack
|
||
nop.f 0
|
||
mov GR_SAVE_GP=gp // Save gp
|
||
};;
|
||
|
||
// (2)
|
||
{ .mmi
|
||
stfs [GR_Parameter_Y] = f1,16 // STORE Parameter 2 on stack
|
||
add GR_Parameter_X = 16,sp // Parameter 1 address
|
||
.save b0, GR_SAVE_B0
|
||
mov GR_SAVE_B0=b0 // Save b0
|
||
};;
|
||
|
||
.body
|
||
// (3)
|
||
{ .mib
|
||
stfs [GR_Parameter_X] = f10 // STORE Parameter 1 on stack
|
||
add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address
|
||
nop.b 0
|
||
}
|
||
{ .mib
|
||
stfs [GR_Parameter_Y] = f8 // STORE Parameter 3 on stack
|
||
add GR_Parameter_Y = -16,GR_Parameter_Y
|
||
br.call.sptk b0=__libm_error_support# // Call error handling function
|
||
};;
|
||
{ .mmi
|
||
nop.m 0
|
||
nop.m 0
|
||
add GR_Parameter_RESULT = 48,sp
|
||
};;
|
||
|
||
// (4)
|
||
{ .mmi
|
||
ldfs f8 = [GR_Parameter_RESULT] // Get return result off stack
|
||
.restore sp
|
||
add sp = 64,sp // Restore stack pointer
|
||
mov b0 = GR_SAVE_B0 // Restore return address
|
||
};;
|
||
{ .mib
|
||
mov gp = GR_SAVE_GP // Restore gp
|
||
mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs
|
||
br.ret.sptk b0 // Return
|
||
};;
|
||
|
||
LOCAL_LIBM_END(__libm_error_region)
|
||
|
||
.type __libm_error_support#,@function
|
||
.global __libm_error_support#
|