-/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <complex.h>
-/* Since `complex' is currently not really implemented in most C compilers
- and if it is implemented, the implementations differ. This makes it
- quite difficult to write a generic implementation of this header. We
- do not try this for now and instead concentrate only on GNU CC. Once
- we have more information support for other compilers might follow. */
+/* There are two variant implementations of type-generic macros in
+ this file: one for GCC 8 and later, using __builtin_tgmath and
+ where each macro expands each of its arguments only once, and one
+ for older GCC, using other compiler extensions but with macros
+ expanding their arguments many times (so resulting in exponential
+ blowup of the size of expansions when calls to such macros are
+ nested inside arguments to such macros). */
-#if __GNUC_PREREQ (2, 7)
+#define __HAVE_BUILTIN_TGMATH __GNUC_PREREQ (8, 0)
-# ifdef __NO_LONG_DOUBLE_MATH
-# define __tgml(fct) fct
-# else
-# define __tgml(fct) fct ## l
-# endif
+#if __GNUC_PREREQ (2, 7)
-/* This is ugly but unless gcc gets appropriate builtins we have to do
- something like this. Don't ask how it works. */
+# if __HAVE_BUILTIN_TGMATH
+
+# if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F16_ARG(X) X ## f16,
+# else
+# define __TG_F16_ARG(X)
+# endif
+# if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F32_ARG(X) X ## f32,
+# else
+# define __TG_F32_ARG(X)
+# endif
+# if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F64_ARG(X) X ## f64,
+# else
+# define __TG_F64_ARG(X)
+# endif
+# if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F128_ARG(X) X ## f128,
+# else
+# define __TG_F128_ARG(X)
+# endif
+# if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F32X_ARG(X) X ## f32x,
+# else
+# define __TG_F32X_ARG(X)
+# endif
+# if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F64X_ARG(X) X ## f64x,
+# else
+# define __TG_F64X_ARG(X)
+# endif
+# if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# define __TG_F128X_ARG(X) X ## f128x,
+# else
+# define __TG_F128X_ARG(X)
+# endif
+
+# define __TGMATH_FUNCS(X) X ## f, X, X ## l, \
+ __TG_F16_ARG (X) __TG_F32_ARG (X) __TG_F64_ARG (X) __TG_F128_ARG (X) \
+ __TG_F32X_ARG (X) __TG_F64X_ARG (X) __TG_F128X_ARG (X)
+# define __TGMATH_RCFUNCS(F, C) __TGMATH_FUNCS (F) __TGMATH_FUNCS (C)
+# define __TGMATH_1(F, X) __builtin_tgmath (__TGMATH_FUNCS (F) (X))
+# define __TGMATH_2(F, X, Y) __builtin_tgmath (__TGMATH_FUNCS (F) (X), (Y))
+# define __TGMATH_2STD(F, X, Y) __builtin_tgmath (F ## f, F, F ## l, (X), (Y))
+# define __TGMATH_3(F, X, Y, Z) __builtin_tgmath (__TGMATH_FUNCS (F) \
+ (X), (Y), (Z))
+# define __TGMATH_1C(F, C, X) __builtin_tgmath (__TGMATH_RCFUNCS (F, C) (X))
+# define __TGMATH_2C(F, C, X, Y) __builtin_tgmath (__TGMATH_RCFUNCS (F, C) \
+ (X), (Y))
+
+# else /* !__HAVE_BUILTIN_TGMATH. */
+
+# ifdef __NO_LONG_DOUBLE_MATH
+# define __tgml(fct) fct
+# else
+# define __tgml(fct) fct ## l
+# endif
/* __floating_type expands to 1 if TYPE is a floating type (including
complex floating types), 0 if TYPE is an integer type (including
constant expressions. All these macros can assume their argument
has an arithmetic type (not vector, decimal floating-point or
fixed-point), valid to pass to tgmath.h macros. */
-# if __GNUC_PREREQ (3, 1)
+# if __GNUC_PREREQ (3, 1)
/* __builtin_classify_type expands to an integer constant expression
in GCC 3.1 and later. Default conversions applied to the argument
of __builtin_classify_type mean it always returns 1 for real
integer types rather than ever returning different values for
character, boolean or enumerated types. */
-# define __floating_type(type) \
+# define __floating_type(type) \
(__builtin_classify_type (__real__ ((type) 0)) == 8)
-# define __real_integer_type(type) \
+# define __real_integer_type(type) \
(__builtin_classify_type ((type) 0) == 1)
-# define __complex_integer_type(type) \
+# define __complex_integer_type(type) \
(__builtin_classify_type ((type) 0) == 9 \
&& __builtin_classify_type (__real__ ((type) 0)) == 1)
-# else
+# else
/* GCC versions predating __builtin_classify_type are also looser on
what counts as an integer constant expression. */
-# define __floating_type(type) (((type) 1.25) != 1)
-# define __real_integer_type(type) (((type) (1.25 + _Complex_I)) == 1)
-# define __complex_integer_type(type) \
+# define __floating_type(type) (((type) 1.25) != 1)
+# define __real_integer_type(type) (((type) (1.25 + _Complex_I)) == 1)
+# define __complex_integer_type(type) \
(((type) (1.25 + _Complex_I)) == (1 + _Complex_I))
-# endif
+# endif
/* Whether an expression (of arithmetic type) has a real type. */
-# define __expr_is_real(E) (__builtin_classify_type (E) != 9)
+# define __expr_is_real(E) (__builtin_classify_type (E) != 9)
/* The tgmath real type for T, where E is 0 if T is an integer type
and 1 for a floating type. If T has a complex type, it is
unspecified whether the return type is real or complex (but it has
the correct corresponding real type). */
-# define __tgmath_real_type_sub(T, E) \
+# define __tgmath_real_type_sub(T, E) \
__typeof__ (*(0 ? (__typeof__ (0 ? (double *) 0 : (void *) (E))) 0 \
: (__typeof__ (0 ? (T *) 0 : (void *) (!(E)))) 0))
/* The tgmath real type of EXPR. */
-# define __tgmath_real_type(expr) \
+# define __tgmath_real_type(expr) \
__tgmath_real_type_sub (__typeof__ ((__typeof__ (+(expr))) 0), \
__floating_type (__typeof__ (+(expr))))
/* The tgmath complex type for T, where E1 is 1 if T has a floating
type and 0 otherwise, E2 is 1 if T has a real integer type and 0
otherwise, and E3 is 1 if T has a complex type and 0 otherwise. */
-# define __tgmath_complex_type_sub(T, E1, E2, E3) \
+# define __tgmath_complex_type_sub(T, E1, E2, E3) \
__typeof__ (*(0 \
? (__typeof__ (0 ? (T *) 0 : (void *) (!(E1)))) 0 \
: (__typeof__ (0 \
: (void *) (!(E3)))) 0)) 0))
/* The tgmath complex type of EXPR. */
-# define __tgmath_complex_type(expr) \
+# define __tgmath_complex_type(expr) \
__tgmath_complex_type_sub (__typeof__ ((__typeof__ (+(expr))) 0), \
__floating_type (__typeof__ (+(expr))), \
__real_integer_type (__typeof__ (+(expr))), \
__complex_integer_type (__typeof__ (+(expr))))
+# if (__HAVE_DISTINCT_FLOAT16 \
+ || __HAVE_DISTINCT_FLOAT32 \
+ || __HAVE_DISTINCT_FLOAT64 \
+ || __HAVE_DISTINCT_FLOAT32X \
+ || __HAVE_DISTINCT_FLOAT64X \
+ || __HAVE_DISTINCT_FLOAT128X)
+# error "Unsupported _FloatN or _FloatNx types for <tgmath.h>."
+# endif
+
/* Expand to text that checks if ARG_COMB has type _Float128, and if
so calls the appropriately suffixed FCT (which may include a cast),
or FCT and CFCT for complex functions, with arguments ARG_CALL. */
-# if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
-# define __TGMATH_F128(arg_comb, fct, arg_call) \
+# if __HAVE_DISTINCT_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+# if (!__HAVE_FLOAT64X \
+ || __HAVE_FLOAT64X_LONG_DOUBLE \
+ || !__HAVE_FLOATN_NOT_TYPEDEF)
+# define __TGMATH_F128(arg_comb, fct, arg_call) \
__builtin_types_compatible_p (__typeof (+(arg_comb)), _Float128) \
? fct ## f128 arg_call :
-# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \
+# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \
__builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), _Float128) \
? (__expr_is_real (arg_comb) \
? fct ## f128 arg_call \
: cfct ## f128 arg_call) :
-# else
-# define __TGMATH_F128(arg_comb, fct, arg_call) /* Nothing. */
-# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) /* Nothing. */
-# endif
+# else
+/* _Float64x is a distinct type at the C language level, which must be
+ handled like _Float128. */
+# define __TGMATH_F128(arg_comb, fct, arg_call) \
+ (__builtin_types_compatible_p (__typeof (+(arg_comb)), _Float128) \
+ || __builtin_types_compatible_p (__typeof (+(arg_comb)), _Float64x)) \
+ ? fct ## f128 arg_call :
+# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) \
+ (__builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), _Float128) \
+ || __builtin_types_compatible_p (__typeof (+__real__ (arg_comb)), \
+ _Float64x)) \
+ ? (__expr_is_real (arg_comb) \
+ ? fct ## f128 arg_call \
+ : cfct ## f128 arg_call) :
+# endif
+# else
+# define __TGMATH_F128(arg_comb, fct, arg_call) /* Nothing. */
+# define __TGMATH_CF128(arg_comb, fct, cfct, arg_call) /* Nothing. */
+# endif
+# endif /* !__HAVE_BUILTIN_TGMATH. */
/* We have two kinds of generic macros: to support functions which are
only defined on real valued parameters and those which are defined
for complex functions as well. */
-# define __TGMATH_UNARY_REAL_ONLY(Val, Fct) \
+# if __HAVE_BUILTIN_TGMATH
+
+# define __TGMATH_UNARY_REAL_ONLY(Val, Fct) __TGMATH_1 (Fct, (Val))
+# define __TGMATH_UNARY_REAL_RET_ONLY(Val, Fct) __TGMATH_1 (Fct, (Val))
+# define __TGMATH_BINARY_FIRST_REAL_ONLY(Val1, Val2, Fct) \
+ __TGMATH_2 (Fct, (Val1), (Val2))
+# define __TGMATH_BINARY_FIRST_REAL_STD_ONLY(Val1, Val2, Fct) \
+ __TGMATH_2STD (Fct, (Val1), (Val2))
+# define __TGMATH_BINARY_REAL_ONLY(Val1, Val2, Fct) \
+ __TGMATH_2 (Fct, (Val1), (Val2))
+# define __TGMATH_BINARY_REAL_STD_ONLY(Val1, Val2, Fct) \
+ __TGMATH_2STD (Fct, (Val1), (Val2))
+# define __TGMATH_BINARY_REAL_RET_ONLY(Val1, Val2, Fct) \
+ __TGMATH_2 (Fct, (Val1), (Val2))
+# define __TGMATH_TERNARY_FIRST_SECOND_REAL_ONLY(Val1, Val2, Val3, Fct) \
+ __TGMATH_3 (Fct, (Val1), (Val2), (Val3))
+# define __TGMATH_TERNARY_REAL_ONLY(Val1, Val2, Val3, Fct) \
+ __TGMATH_3 (Fct, (Val1), (Val2), (Val3))
+# define __TGMATH_TERNARY_FIRST_REAL_RET_ONLY(Val1, Val2, Val3, Fct) \
+ __TGMATH_3 (Fct, (Val1), (Val2), (Val3))
+# define __TGMATH_UNARY_REAL_IMAG(Val, Fct, Cfct) \
+ __TGMATH_1C (Fct, Cfct, (Val))
+# define __TGMATH_UNARY_IMAG(Val, Cfct) __TGMATH_1 (Cfct, (Val))
+# define __TGMATH_UNARY_REAL_IMAG_RET_REAL(Val, Fct, Cfct) \
+ __TGMATH_1C (Fct, Cfct, (Val))
+# define __TGMATH_UNARY_REAL_IMAG_RET_REAL_SAME(Val, Cfct) \
+ __TGMATH_1 (Cfct, (Val))
+# define __TGMATH_BINARY_REAL_IMAG(Val1, Val2, Fct, Cfct) \
+ __TGMATH_2C (Fct, Cfct, (Val1), (Val2))
+
+# else /* !__HAVE_BUILTIN_TGMATH. */
+
+# define __TGMATH_UNARY_REAL_ONLY(Val, Fct) \
(__extension__ ((sizeof (+(Val)) == sizeof (double) \
|| __builtin_classify_type (Val) != 8) \
? (__tgmath_real_type (Val)) Fct (Val) \
(Val)) \
(__tgmath_real_type (Val)) __tgml(Fct) (Val)))
-# define __TGMATH_UNARY_REAL_RET_ONLY(Val, Fct) \
+# define __TGMATH_UNARY_REAL_RET_ONLY(Val, Fct) \
(__extension__ ((sizeof (+(Val)) == sizeof (double) \
|| __builtin_classify_type (Val) != 8) \
? Fct (Val) \
: __TGMATH_F128 ((Val), Fct, (Val)) \
__tgml(Fct) (Val)))
-# define __TGMATH_BINARY_FIRST_REAL_ONLY(Val1, Val2, Fct) \
+# define __TGMATH_BINARY_FIRST_REAL_ONLY(Val1, Val2, Fct) \
(__extension__ ((sizeof (+(Val1)) == sizeof (double) \
|| __builtin_classify_type (Val1) != 8) \
? (__tgmath_real_type (Val1)) Fct (Val1, Val2) \
(Val1, Val2)) \
(__tgmath_real_type (Val1)) __tgml(Fct) (Val1, Val2)))
-# define __TGMATH_BINARY_FIRST_REAL_STD_ONLY(Val1, Val2, Fct) \
+# define __TGMATH_BINARY_FIRST_REAL_STD_ONLY(Val1, Val2, Fct) \
(__extension__ ((sizeof (+(Val1)) == sizeof (double) \
|| __builtin_classify_type (Val1) != 8) \
? (__tgmath_real_type (Val1)) Fct (Val1, Val2) \
? (__tgmath_real_type (Val1)) Fct##f (Val1, Val2) \
: (__tgmath_real_type (Val1)) __tgml(Fct) (Val1, Val2)))
-# define __TGMATH_BINARY_REAL_ONLY(Val1, Val2, Fct) \
+# define __TGMATH_BINARY_REAL_ONLY(Val1, Val2, Fct) \
(__extension__ ((sizeof ((Val1) + (Val2)) > sizeof (double) \
&& __builtin_classify_type ((Val1) + (Val2)) == 8) \
? __TGMATH_F128 ((Val1) + (Val2), \
+ (__tgmath_real_type (Val2)) 0)) \
Fct##f (Val1, Val2)))
-# define __TGMATH_BINARY_REAL_STD_ONLY(Val1, Val2, Fct) \
+# define __TGMATH_BINARY_REAL_STD_ONLY(Val1, Val2, Fct) \
(__extension__ ((sizeof ((Val1) + (Val2)) > sizeof (double) \
&& __builtin_classify_type ((Val1) + (Val2)) == 8) \
? (__typeof ((__tgmath_real_type (Val1)) 0 \
+ (__tgmath_real_type (Val2)) 0)) \
Fct##f (Val1, Val2)))
-# define __TGMATH_BINARY_REAL_RET_ONLY(Val1, Val2, Fct) \
+# define __TGMATH_BINARY_REAL_RET_ONLY(Val1, Val2, Fct) \
(__extension__ ((sizeof ((Val1) + (Val2)) > sizeof (double) \
&& __builtin_classify_type ((Val1) + (Val2)) == 8) \
? __TGMATH_F128 ((Val1) + (Val2), Fct, (Val1, Val2)) \
? Fct (Val1, Val2) \
: Fct##f (Val1, Val2)))
-# define __TGMATH_TERNARY_FIRST_SECOND_REAL_ONLY(Val1, Val2, Val3, Fct) \
+# define __TGMATH_TERNARY_FIRST_SECOND_REAL_ONLY(Val1, Val2, Val3, Fct) \
(__extension__ ((sizeof ((Val1) + (Val2)) > sizeof (double) \
&& __builtin_classify_type ((Val1) + (Val2)) == 8) \
? __TGMATH_F128 ((Val1) + (Val2), \
+ (__tgmath_real_type (Val2)) 0)) \
Fct##f (Val1, Val2, Val3)))
-# define __TGMATH_TERNARY_REAL_ONLY(Val1, Val2, Val3, Fct) \
+# define __TGMATH_TERNARY_REAL_ONLY(Val1, Val2, Val3, Fct) \
(__extension__ ((sizeof ((Val1) + (Val2) + (Val3)) > sizeof (double) \
&& __builtin_classify_type ((Val1) + (Val2) + (Val3)) \
== 8) \
+ (__tgmath_real_type (Val3)) 0)) \
Fct##f (Val1, Val2, Val3)))
-# define __TGMATH_TERNARY_FIRST_REAL_RET_ONLY(Val1, Val2, Val3, Fct) \
+# define __TGMATH_TERNARY_FIRST_REAL_RET_ONLY(Val1, Val2, Val3, Fct) \
(__extension__ ((sizeof (+(Val1)) == sizeof (double) \
|| __builtin_classify_type (Val1) != 8) \
? Fct (Val1, Val2, Val3) \
/* XXX This definition has to be changed as soon as the compiler understands
the imaginary keyword. */
-# define __TGMATH_UNARY_REAL_IMAG(Val, Fct, Cfct) \
+# define __TGMATH_UNARY_REAL_IMAG(Val, Fct, Cfct) \
(__extension__ ((sizeof (+__real__ (Val)) == sizeof (double) \
|| __builtin_classify_type (__real__ (Val)) != 8) \
? (__expr_is_real (Val) \
? (__tgmath_complex_type (Val)) __tgml(Fct) (Val) \
: (__tgmath_complex_type (Val)) __tgml(Cfct) (Val))))
-# define __TGMATH_UNARY_IMAG(Val, Cfct) \
+# define __TGMATH_UNARY_IMAG(Val, Cfct) \
(__extension__ ((sizeof (+__real__ (Val)) == sizeof (double) \
|| __builtin_classify_type (__real__ (Val)) != 8) \
? (__typeof__ ((__tgmath_real_type (Val)) 0 \
/* XXX This definition has to be changed as soon as the compiler understands
the imaginary keyword. */
-# define __TGMATH_UNARY_REAL_IMAG_RET_REAL(Val, Fct, Cfct) \
+# define __TGMATH_UNARY_REAL_IMAG_RET_REAL(Val, Fct, Cfct) \
(__extension__ ((sizeof (+__real__ (Val)) == sizeof (double) \
|| __builtin_classify_type (__real__ (Val)) != 8) \
? (__expr_is_real (Val) \
__tgml(Fct) (Val) \
: (__typeof__ (__real__ (__tgmath_real_type (Val)) 0)) \
__tgml(Cfct) (Val))))
+# define __TGMATH_UNARY_REAL_IMAG_RET_REAL_SAME(Val, Cfct) \
+ __TGMATH_UNARY_REAL_IMAG_RET_REAL ((Val), Cfct, Cfct)
/* XXX This definition has to be changed as soon as the compiler understands
the imaginary keyword. */
-# define __TGMATH_BINARY_REAL_IMAG(Val1, Val2, Fct, Cfct) \
+# define __TGMATH_BINARY_REAL_IMAG(Val1, Val2, Fct, Cfct) \
(__extension__ ((sizeof (__real__ (Val1) \
+ __real__ (Val2)) > sizeof (double) \
&& __builtin_classify_type (__real__ (Val1) \
: (__typeof ((__tgmath_complex_type (Val1)) 0 \
+ (__tgmath_complex_type (Val2)) 0)) \
Cfct##f (Val1, Val2))))
+# endif /* !__HAVE_BUILTIN_TGMATH. */
#else
# error "Unsupported compiler; you cannot use <tgmath.h>"
#endif
/* Absolute value, conjugates, and projection. */
/* Argument value of Z. */
-#define carg(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL (Val, carg, carg)
+#define carg(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL_SAME (Val, carg)
/* Complex conjugate of Z. */
#define conj(Val) __TGMATH_UNARY_IMAG (Val, conj)
/* Decomposing complex values. */
/* Imaginary part of Z. */
-#define cimag(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL (Val, cimag, cimag)
+#define cimag(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL_SAME (Val, cimag)
/* Real part of Z. */
-#define creal(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL (Val, creal, creal)
+#define creal(Val) __TGMATH_UNARY_REAL_IMAG_RET_REAL_SAME (Val, creal)
#endif /* tgmath.h */
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