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/* $OpenBSD: tgmath.h,v 1.1 2011/07/08 19:28:06 martynas Exp $ */ |
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/*- |
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* Copyright (c) 2004 Stefan Farfeleder. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $FreeBSD: src/include/tgmath.h,v 1.5 2007/02/02 18:30:23 schweikh Exp $ |
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*/ |
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#ifndef _TGMATH_H_ |
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#define _TGMATH_H_ |
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#include <complex.h> |
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#include <math.h> |
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/* |
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* This implementation of <tgmath.h> requires two implementation-dependent |
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* macros to be defined: |
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* __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) |
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* Invokes fnl() if the corresponding real type of x, y or z is long |
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* double, fn() if it is double or any has an integer type, and fnf() |
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* otherwise. |
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* __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) |
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* Invokes [c]fnl() if the corresponding real type of x, y or z is long |
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* double, [c]fn() if it is double or any has an integer type, and |
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* [c]fnf() otherwise. The function with the 'c' prefix is called if |
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* any of x, y or z is a complex number. |
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* Both macros call the chosen function with all additional arguments passed |
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* to them, as given by __VA_ARGS__. |
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* |
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* Note that these macros cannot be implemented with C's ?: operator, |
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* because the return type of the whole expression would incorrectly be long |
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* double complex regardless of the argument types. |
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*/ |
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#if __GNUC_PREREQ__(3, 1) |
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#define __tg_type(e, t) __builtin_types_compatible_p(__typeof__(e), t) |
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#define __tg_type3(e1, e2, e3, t) \ |
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(__tg_type(e1, t) || __tg_type(e2, t) || __tg_type(e3, t)) |
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#define __tg_type_corr(e1, e2, e3, t) \ |
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(__tg_type3(e1, e2, e3, t) || __tg_type3(e1, e2, e3, t _Complex)) |
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#define __tg_integer(e1, e2, e3) \ |
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(((__typeof__(e1))1.5 == 1) || ((__typeof__(e2))1.5 == 1) || \ |
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((__typeof__(e3))1.5 == 1)) |
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#define __tg_is_complex(e1, e2, e3) \ |
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(__tg_type3(e1, e2, e3, float _Complex) || \ |
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__tg_type3(e1, e2, e3, double _Complex) || \ |
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__tg_type3(e1, e2, e3, long double _Complex) || \ |
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__tg_type3(e1, e2, e3, __typeof__(_Complex_I))) |
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#define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \ |
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__builtin_choose_expr(__tg_type_corr(x, y, z, long double), \ |
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fnl(__VA_ARGS__), __builtin_choose_expr( \ |
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__tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\ |
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fn(__VA_ARGS__), fnf(__VA_ARGS__))) |
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#define __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) \ |
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__builtin_choose_expr(__tg_is_complex(x, y, z), \ |
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__tg_impl_simple(x, y, z, cfn, cfnf, cfnl, __VA_ARGS__), \ |
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__tg_impl_simple(x, y, z, fn, fnf, fnl, __VA_ARGS__)) |
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#else /* __GNUC__ */ |
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#error "<tgmath.h> not implemented for this compiler" |
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#endif /* !__GNUC__ */ |
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/* Macros to save lots of repetition below */ |
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#define __tg_simple(x, fn) \ |
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__tg_impl_simple(x, x, x, fn, fn##f, fn##l, x) |
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#define __tg_simple2(x, y, fn) \ |
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__tg_impl_simple(x, x, y, fn, fn##f, fn##l, x, y) |
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#define __tg_simplev(x, fn, ...) \ |
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__tg_impl_simple(x, x, x, fn, fn##f, fn##l, __VA_ARGS__) |
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#define __tg_full(x, fn) \ |
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__tg_impl_full(x, x, x, fn, fn##f, fn##l, c##fn, c##fn##f, c##fn##l, x) |
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/* 7.22#4 -- These macros expand to real or complex functions, depending on |
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* the type of their arguments. */ |
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#define acos(x) __tg_full(x, acos) |
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#define asin(x) __tg_full(x, asin) |
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#define atan(x) __tg_full(x, atan) |
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#define acosh(x) __tg_full(x, acosh) |
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#define asinh(x) __tg_full(x, asinh) |
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#define atanh(x) __tg_full(x, atanh) |
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#define cos(x) __tg_full(x, cos) |
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#define sin(x) __tg_full(x, sin) |
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#define tan(x) __tg_full(x, tan) |
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#define cosh(x) __tg_full(x, cosh) |
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#define sinh(x) __tg_full(x, sinh) |
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#define tanh(x) __tg_full(x, tanh) |
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#define exp(x) __tg_full(x, exp) |
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#define log(x) __tg_full(x, log) |
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#define pow(x, y) __tg_impl_full(x, x, y, pow, powf, powl, \ |
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cpow, cpowf, cpowl, x, y) |
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#define sqrt(x) __tg_full(x, sqrt) |
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/* "The corresponding type-generic macro for fabs and cabs is fabs." */ |
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#define fabs(x) __tg_impl_full(x, x, x, fabs, fabsf, fabsl, \ |
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cabs, cabsf, cabsl, x) |
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/* 7.22#5 -- These macros are only defined for arguments with real type. */ |
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#define atan2(x, y) __tg_simple2(x, y, atan2) |
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#define cbrt(x) __tg_simple(x, cbrt) |
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#define ceil(x) __tg_simple(x, ceil) |
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#define copysign(x, y) __tg_simple2(x, y, copysign) |
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#define erf(x) __tg_simple(x, erf) |
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#define erfc(x) __tg_simple(x, erfc) |
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#define exp2(x) __tg_simple(x, exp2) |
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#define expm1(x) __tg_simple(x, expm1) |
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#define fdim(x, y) __tg_simple2(x, y, fdim) |
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#define floor(x) __tg_simple(x, floor) |
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#define fma(x, y, z) __tg_impl_simple(x, y, z, fma, fmaf, fmal, x, y, z) |
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#define fmax(x, y) __tg_simple2(x, y, fmax) |
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#define fmin(x, y) __tg_simple2(x, y, fmin) |
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#define fmod(x, y) __tg_simple2(x, y, fmod) |
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#define frexp(x, y) __tg_simplev(x, frexp, x, y) |
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#define hypot(x, y) __tg_simple2(x, y, hypot) |
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#define ilogb(x) __tg_simple(x, ilogb) |
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#define ldexp(x, y) __tg_simplev(x, ldexp, x, y) |
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#define lgamma(x) __tg_simple(x, lgamma) |
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#define llrint(x) __tg_simple(x, llrint) |
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#define llround(x) __tg_simple(x, llround) |
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#define log10(x) __tg_simple(x, log10) |
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#define log1p(x) __tg_simple(x, log1p) |
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#define log2(x) __tg_simple(x, log2) |
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#define logb(x) __tg_simple(x, logb) |
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#define lrint(x) __tg_simple(x, lrint) |
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#define lround(x) __tg_simple(x, lround) |
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#define nearbyint(x) __tg_simple(x, nearbyint) |
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#define nextafter(x, y) __tg_simple2(x, y, nextafter) |
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#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y) |
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#define remainder(x, y) __tg_simple2(x, y, remainder) |
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#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \ |
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remquol, x, y, z) |
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#define rint(x) __tg_simple(x, rint) |
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#define round(x) __tg_simple(x, round) |
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#define scalbn(x, y) __tg_simplev(x, scalbn, x, y) |
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#define scalbln(x, y) __tg_simplev(x, scalbln, x, y) |
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#define tgamma(x) __tg_simple(x, tgamma) |
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#define trunc(x) __tg_simple(x, trunc) |
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/* 7.22#6 -- These macros always expand to complex functions. */ |
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#define carg(x) __tg_simple(x, carg) |
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#define cimag(x) __tg_simple(x, cimag) |
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#define conj(x) __tg_simple(x, conj) |
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#define cproj(x) __tg_simple(x, cproj) |
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#define creal(x) __tg_simple(x, creal) |
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#endif /* !_TGMATH_H_ */ |