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glibc/sysdeps/ia64/fpu/s_tan.S
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines 
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>
2021-09-03 22:06:44 +05:30

878 lines
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.file "tancot.s"
// Copyright (c) 2000 - 2003, 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 Added cot
// 02/10/03 Reordered header: .section, .global, .proc, .align
//
// API
//==============================================================
// double tan(double x);
// double cot(double x);
//
// Overview of operation
//==============================================================
// If the input value in radians is |x| >= 1.xxxxx 2^10 call the
// older slower version.
//
// The new algorithm is used when |x| <= 1.xxxxx 2^9.
//
// Represent the input X as Nfloat * pi/2 + r
// where r can be negative and |r| <= pi/4
//
// tan_W = x * 2/pi
// Nfloat = round_int(tan_W)
//
// tan_r = x - Nfloat * (pi/2)_hi
// a) tan_r = tan_r - Nfloat * (pi/2)_lo (for tan)
// b) tan_r = Nfloat * (pi/2)_lo - tan_r (for cot)
//
// We have two paths: p8, when Nfloat is even and p9. when Nfloat is odd.
// a) for tan: p8: tan(X) = tan(r)
// p9: tan(X) = -cot(r)
// b) for cot: p9: cot(X) = cot(r)
// p8: cot(X) = -tan(r)
//
// Each is evaluated as a series. The p9 path requires 1/r.
//
// The coefficients used in the series are stored in a table as
// are the pi constants.
//
// Registers used
//==============================================================
//
// predicate registers used:
// p6-12
//
// floating-point registers used:
// f10-15, f32-106
// f8, input
//
// general registers used
// r14-26, r32-39
//
// Assembly macros
//==============================================================
TAN_INV_PI_BY_2_2TO64 = f10
TAN_RSHF_2TO64 = f11
TAN_2TOM64 = f12
TAN_RSHF = f13
TAN_W_2TO64_RSH = f14
TAN_NFLOAT = f15
tan_Inv_Pi_by_2 = f32
tan_Pi_by_2_hi = f33
tan_Pi_by_2_lo = f34
tan_P0 = f35
tan_P1 = f36
tan_P2 = f37
tan_P3 = f38
tan_P4 = f39
tan_P5 = f40
tan_P6 = f41
tan_P7 = f42
tan_P8 = f43
tan_P9 = f44
tan_P10 = f45
tan_P11 = f46
tan_P12 = f47
tan_P13 = f48
tan_P14 = f49
tan_P15 = f50
tan_Q0 = f51
tan_Q1 = f52
tan_Q2 = f53
tan_Q3 = f54
tan_Q4 = f55
tan_Q5 = f56
tan_Q6 = f57
tan_Q7 = f58
tan_Q8 = f59
tan_Q9 = f60
tan_Q10 = f61
tan_r = f62
tan_rsq = f63
tan_rcube = f64
tan_v18 = f65
tan_v16 = f66
tan_v17 = f67
tan_v12 = f68
tan_v13 = f69
tan_v7 = f70
tan_v8 = f71
tan_v4 = f72
tan_v5 = f73
tan_v15 = f74
tan_v11 = f75
tan_v14 = f76
tan_v3 = f77
tan_v6 = f78
tan_v10 = f79
tan_v2 = f80
tan_v9 = f81
tan_v1 = f82
tan_int_Nfloat = f83
tan_Nfloat = f84
tan_NORM_f8 = f85
tan_W = f86
tan_y0 = f87
tan_d = f88
tan_y1 = f89
tan_dsq = f90
tan_y2 = f91
tan_d4 = f92
tan_inv_r = f93
tan_z1 = f94
tan_z2 = f95
tan_z3 = f96
tan_z4 = f97
tan_z5 = f98
tan_z6 = f99
tan_z7 = f100
tan_z8 = f101
tan_z9 = f102
tan_z10 = f103
tan_z11 = f104
tan_z12 = f105
arg_copy = f106
/////////////////////////////////////////////////////////////
tan_GR_sig_inv_pi_by_2 = r14
tan_GR_rshf_2to64 = r15
tan_GR_exp_2tom64 = r16
tan_GR_n = r17
tan_GR_rshf = r18
tan_AD = r19
tan_GR_10009 = r20
tan_GR_17_ones = r21
tan_GR_N_odd_even = r22
tan_GR_N = r23
tan_signexp = r24
tan_exp = r25
tan_ADQ = r26
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
RODATA
.align 16
LOCAL_OBJECT_START(double_tan_constants)
data8 0xC90FDAA22168C234, 0x00003FFF // pi/2 hi
data8 0xBEEA54580DDEA0E1 // P14
data8 0x3ED3021ACE749A59 // P15
data8 0xBEF312BD91DC8DA1 // P12
data8 0x3EFAE9AFC14C5119 // P13
data8 0x3F2F342BF411E769 // P8
data8 0x3F1A60FC9F3B0227 // P9
data8 0x3EFF246E78E5E45B // P10
data8 0x3F01D9D2E782875C // P11
data8 0x3F8226E34C4499B6 // P4
data8 0x3F6D6D3F12C236AC // P5
data8 0x3F57DA1146DCFD8B // P6
data8 0x3F43576410FE3D75 // P7
data8 0x3FD5555555555555 // P0
data8 0x3FC11111111111C2 // P1
data8 0x3FABA1BA1BA0E850 // P2
data8 0x3F9664F4886725A7 // P3
LOCAL_OBJECT_END(double_tan_constants)
LOCAL_OBJECT_START(double_Q_tan_constants)
data8 0xC4C6628B80DC1CD1, 0x00003FBF // pi/2 lo
data8 0x3E223A73BA576E48 // Q8
data8 0x3DF54AD8D1F2CA43 // Q9
data8 0x3EF66A8EE529A6AA // Q4
data8 0x3EC2281050410EE6 // Q5
data8 0x3E8D6BB992CC3CF5 // Q6
data8 0x3E57F88DE34832E4 // Q7
data8 0x3FD5555555555555 // Q0
data8 0x3F96C16C16C16DB8 // Q1
data8 0x3F61566ABBFFB489 // Q2
data8 0x3F2BBD77945C1733 // Q3
data8 0x3D927FB33E2B0E04 // Q10
LOCAL_OBJECT_END(double_Q_tan_constants)
.section .text
////////////////////////////////////////////////////////
LOCAL_LIBM_ENTRY(cot)
// The initial fnorm will take any unmasked faults and
// normalize any single/double unorms
{ .mlx
cmp.eq p12, p11 = r0, r0 // set p12=1, p11=0 for cot
movl tan_GR_sig_inv_pi_by_2 = 0xA2F9836E4E44152A // significand of 2/pi
}
{ .mlx
addl tan_AD = @ltoff(double_tan_constants), gp
movl tan_GR_rshf_2to64 = 0x47e8000000000000 // 1.1000 2^(63+63+1)
}
;;
{ .mlx
mov tan_GR_exp_2tom64 = 0xffff-64 // exponent of scaling factor 2^-64
movl tan_GR_rshf = 0x43e8000000000000 // 1.1000 2^63 for right shift
}
{ .mfb
ld8 tan_AD = [tan_AD]
fnorm.s0 tan_NORM_f8 = f8
br.cond.sptk COMMON_PATH
}
;;
LOCAL_LIBM_END(cot)
GLOBAL_IEEE754_ENTRY(tan)
// The initial fnorm will take any unmasked faults and
// normalize any single/double unorms
{ .mlx
cmp.eq p11, p12 = r0, r0 // set p11=1, p12=0 for tan
movl tan_GR_sig_inv_pi_by_2 = 0xA2F9836E4E44152A // significand of 2/pi
}
{ .mlx
addl tan_AD = @ltoff(double_tan_constants), gp
movl tan_GR_rshf_2to64 = 0x47e8000000000000 // 1.1000 2^(63+63+1)
}
;;
{ .mlx
mov tan_GR_exp_2tom64 = 0xffff-64 // exponent of scaling factor 2^-64
movl tan_GR_rshf = 0x43e8000000000000 // 1.1000 2^63 for right shift
}
{ .mfi
ld8 tan_AD = [tan_AD]
fnorm.s0 tan_NORM_f8 = f8
nop.i 0
}
;;
// Common path for both tan and cot
COMMON_PATH:
// Form two constants we need
// 2/pi * 2^1 * 2^63, scaled by 2^64 since we just loaded the significand
// 1.1000...000 * 2^(63+63+1) to right shift int(W) into the significand
{ .mmi
setf.sig TAN_INV_PI_BY_2_2TO64 = tan_GR_sig_inv_pi_by_2
setf.d TAN_RSHF_2TO64 = tan_GR_rshf_2to64
mov tan_GR_17_ones = 0x1ffff ;;
}
// Form another constant
// 2^-64 for scaling Nfloat
// 1.1000...000 * 2^63, the right shift constant
{ .mmf
setf.exp TAN_2TOM64 = tan_GR_exp_2tom64
adds tan_ADQ = double_Q_tan_constants - double_tan_constants, tan_AD
(p11) fclass.m.unc p6,p0 = f8, 0x07 // Test for x=0 (tan)
}
;;
// Form another constant
// 2^-64 for scaling Nfloat
// 1.1000...000 * 2^63, the right shift constant
{ .mmf
setf.d TAN_RSHF = tan_GR_rshf
ldfe tan_Pi_by_2_hi = [tan_AD],16
fclass.m.unc p7,p0 = f8, 0x23 // Test for x=inf
}
;;
{ .mfb
ldfe tan_Pi_by_2_lo = [tan_ADQ],16
fclass.m.unc p8,p0 = f8, 0xc3 // Test for x=nan
(p6) br.ret.spnt b0 ;; // Exit for x=0 (tan only)
}
{ .mfi
ldfpd tan_P14,tan_P15 = [tan_AD],16
(p7) frcpa.s0 f8,p9=f0,f0 // Set qnan indef if x=inf
mov tan_GR_10009 = 0x10009
}
{ .mib
ldfpd tan_Q8,tan_Q9 = [tan_ADQ],16
nop.i 999
(p7) br.ret.spnt b0 ;; // Exit for x=inf
}
{ .mfi
ldfpd tan_P12,tan_P13 = [tan_AD],16
(p12) fclass.m.unc p6,p0 = f8, 0x07 // Test for x=0 (cot)
nop.i 999
}
{ .mfb
ldfpd tan_Q4,tan_Q5 = [tan_ADQ],16
(p8) fma.d.s0 f8=f8,f1,f8 // Set qnan if x=nan
(p8) br.ret.spnt b0 ;; // Exit for x=nan
}
{ .mmf
getf.exp tan_signexp = tan_NORM_f8
ldfpd tan_P8,tan_P9 = [tan_AD],16
fmerge.s arg_copy = f8, f8 ;; // Save input for error call
}
// Multiply x by scaled 2/pi and add large const to shift integer part of W to
// rightmost bits of significand
{ .mmf
alloc r32=ar.pfs,0,4,4,0
ldfpd tan_Q6,tan_Q7 = [tan_ADQ],16
fma.s1 TAN_W_2TO64_RSH = tan_NORM_f8,TAN_INV_PI_BY_2_2TO64,TAN_RSHF_2TO64
};;
{ .mmf
ldfpd tan_P10,tan_P11 = [tan_AD],16
and tan_exp = tan_GR_17_ones, tan_signexp
(p6) frcpa.s0 f8, p0 = f1, f8 ;; // cot(+-0) = +-Inf
}
// p7 is true if we must call DBX TAN
// p7 is true if f8 exp is > 0x10009 (which includes all ones
// NAN or inf)
{ .mmb
ldfpd tan_Q0,tan_Q1 = [tan_ADQ],16
cmp.ge.unc p7,p0 = tan_exp,tan_GR_10009
(p7) br.cond.spnt TAN_DBX ;;
}
{ .mmb
ldfpd tan_P4,tan_P5 = [tan_AD],16
(p6) mov GR_Parameter_Tag = 226 // (cot)
(p6) br.cond.spnt __libm_error_region ;; // call error support if cot(+-0)
}
{ .mmi
ldfpd tan_Q2,tan_Q3 = [tan_ADQ],16
nop.m 999
nop.i 999 ;;
}
// TAN_NFLOAT = Round_Int_Nearest(tan_W)
{ .mfi
ldfpd tan_P6,tan_P7 = [tan_AD],16
fms.s1 TAN_NFLOAT = TAN_W_2TO64_RSH,TAN_2TOM64,TAN_RSHF
nop.i 999 ;;
}
{ .mfi
ldfd tan_Q10 = [tan_ADQ]
nop.f 999
nop.i 999 ;;
}
{ .mfi
ldfpd tan_P0,tan_P1 = [tan_AD],16
nop.f 999
nop.i 999 ;;
}
{ .mmi
getf.sig tan_GR_n = TAN_W_2TO64_RSH
ldfpd tan_P2,tan_P3 = [tan_AD]
nop.i 999 ;;
}
// tan_r = -tan_Nfloat * tan_Pi_by_2_hi + x
{ .mfi
(p12) add tan_GR_n = 0x1, tan_GR_n // N = N + 1 (for cot)
fnma.s1 tan_r = TAN_NFLOAT, tan_Pi_by_2_hi, tan_NORM_f8
nop.i 999 ;;
}
// p8 ==> even
// p9 ==> odd
{ .mmi
and tan_GR_N_odd_even = 0x1, tan_GR_n ;;
nop.m 999
cmp.eq.unc p8,p9 = tan_GR_N_odd_even, r0 ;;
}
.pred.rel "mutex", p11, p12
// tan_r = tan_r -tan_Nfloat * tan_Pi_by_2_lo (tan)
{ .mfi
nop.m 999
(p11) fnma.s1 tan_r = TAN_NFLOAT, tan_Pi_by_2_lo, tan_r
nop.i 999
}
// tan_r = -(tan_r -tan_Nfloat * tan_Pi_by_2_lo) (cot)
{ .mfi
nop.m 999
(p12) fms.s1 tan_r = TAN_NFLOAT, tan_Pi_by_2_lo, tan_r
nop.i 999 ;;
}
{ .mfi
nop.m 999
fma.s1 tan_rsq = tan_r, tan_r, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) frcpa.s1 tan_y0, p0 = f1,tan_r
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v18 = tan_rsq, tan_P15, tan_P14
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v4 = tan_rsq, tan_P1, tan_P0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v16 = tan_rsq, tan_P13, tan_P12
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v17 = tan_rsq, tan_rsq, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v12 = tan_rsq, tan_P9, tan_P8
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v13 = tan_rsq, tan_P11, tan_P10
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v7 = tan_rsq, tan_P5, tan_P4
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v8 = tan_rsq, tan_P7, tan_P6
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fnma.s1 tan_d = tan_r, tan_y0, f1
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v5 = tan_rsq, tan_P3, tan_P2
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z11 = tan_rsq, tan_Q9, tan_Q8
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z12 = tan_rsq, tan_rsq, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v15 = tan_v17, tan_v18, tan_v16
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z7 = tan_rsq, tan_Q5, tan_Q4
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v11 = tan_v17, tan_v13, tan_v12
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z8 = tan_rsq, tan_Q7, tan_Q6
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v14 = tan_v17, tan_v17, f0
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z3 = tan_rsq, tan_Q1, tan_Q0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v3 = tan_v17, tan_v5, tan_v4
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v6 = tan_v17, tan_v8, tan_v7
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_y1 = tan_y0, tan_d, tan_y0
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_dsq = tan_d, tan_d, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z10 = tan_z12, tan_Q10, tan_z11
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z9 = tan_z12, tan_z12,f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z4 = tan_rsq, tan_Q3, tan_Q2
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z6 = tan_z12, tan_z8, tan_z7
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v10 = tan_v14, tan_v15, tan_v11
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_y2 = tan_y1, tan_d, tan_y0
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_d4 = tan_dsq, tan_dsq, tan_d
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v2 = tan_v14, tan_v6, tan_v3
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v9 = tan_v14, tan_v14, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z2 = tan_z12, tan_z4, tan_z3
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z5 = tan_z9, tan_z10, tan_z6
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_inv_r = tan_d4, tan_y2, tan_y0
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_rcube = tan_rsq, tan_r, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 tan_v1 = tan_v9, tan_v10, tan_v2
nop.i 999
}
{ .mfi
nop.m 999
(p9) fma.s1 tan_z1 = tan_z9, tan_z5, tan_z2
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.d.s0 f8 = tan_v1, tan_rcube, tan_r
nop.i 999
}
{ .mfb
nop.m 999
(p9) fms.d.s0 f8 = tan_r, tan_z1, tan_inv_r
br.ret.sptk b0 ;;
}
GLOBAL_IEEE754_END(tan)
libm_alias_double_other (__tan, tan)
LOCAL_LIBM_ENTRY(__libm_callout)
TAN_DBX:
.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
(p11) br.cond.sptk.many call_tanl ;;
}
// Here if we should call cotl
{ .mmb
nop.m 999
nop.m 999
br.call.sptk.many b0=__libm_cotl# ;;
}
{ .mfi
mov gp = GR_SAVE_GP
fnorm.d.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
call_tanl:
{ .mmb
nop.m 999
nop.m 999
br.call.sptk.many b0=__libm_tanl# ;;
}
{ .mfi
mov gp = GR_SAVE_GP
fnorm.d.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
stfd [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
stfd [GR_Parameter_X] = arg_copy // STORE Parameter 1 on stack
add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address
nop.b 0
}
{ .mib
stfd [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
ldfd 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#
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