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673759328c
These are used to see only if `RRATIONAL` and `RCOMPLEX` are available, however, these two are macros and can be checked with `#ifdef` directly. https://github.com/ruby/bigdecimal/commit/175bbacd43
235 lines
4.2 KiB
C++
235 lines
4.2 KiB
C++
#ifndef MISSING_H
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#define MISSING_H 1
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#if defined(__cplusplus)
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extern "C" {
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#if 0
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} /* satisfy cc-mode */
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#endif
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#endif
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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#ifdef HAVE_MATH_H
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# include <math.h>
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#endif
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#ifndef RB_UNUSED_VAR
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# if defined(_MSC_VER) && _MSC_VER >= 1911
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# define RB_UNUSED_VAR(x) x [[maybe_unused]]
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# elif defined(__has_cpp_attribute) && __has_cpp_attribute(maybe_unused)
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# define RB_UNUSED_VAR(x) x [[maybe_unused]]
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# elif defined(__has_c_attribute) && __has_c_attribute(maybe_unused)
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# define RB_UNUSED_VAR(x) x [[maybe_unused]]
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# elif defined(__GNUC__)
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# define RB_UNUSED_VAR(x) x __attribute__ ((unused))
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# else
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# define RB_UNUSED_VAR(x) x
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# endif
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#endif /* RB_UNUSED_VAR */
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#if defined(_MSC_VER) && _MSC_VER >= 1310
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# define HAVE___ASSUME
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#elif defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1300
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# define HAVE___ASSUME
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#endif
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#ifndef UNREACHABLE
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# if __has_builtin(__builtin_unreachable)
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# define UNREACHABLE __builtin_unreachable()
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# elif defined(HAVE___ASSUME)
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# define UNREACHABLE __assume(0)
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# else
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# define UNREACHABLE /* unreachable */
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# endif
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#endif /* UNREACHABLE */
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/* bool */
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#if defined(__bool_true_false_are_defined)
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# /* Take that. */
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#elif defined(HAVE_STDBOOL_H)
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# include <stdbool.h>
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#else
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typedef unsigned char _Bool;
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# define bool _Bool
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# define true ((_Bool)+1)
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# define false ((_Bool)-1)
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# define __bool_true_false_are_defined
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#endif
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/* abs */
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#ifndef HAVE_LABS
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static inline long
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labs(long const x)
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{
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if (x < 0) return -x;
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return x;
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}
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#endif
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#ifndef HAVE_LLABS
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static inline LONG_LONG
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llabs(LONG_LONG const x)
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{
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if (x < 0) return -x;
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return x;
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}
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#endif
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#ifdef vabs
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# undef vabs
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#endif
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#if SIZEOF_VALUE <= SIZEOF_INT
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# define vabs abs
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#elif SIZEOF_VALUE <= SIZEOF_LONG
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# define vabs labs
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#elif SIZEOF_VALUE <= SIZEOF_LONG_LONG
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# define vabs llabs
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#endif
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/* finite */
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#ifndef HAVE_FINITE
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static int
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finite(double)
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{
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return !isnan(n) && !isinf(n);
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}
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#endif
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#ifndef isfinite
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# ifndef HAVE_ISFINITE
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# define HAVE_ISFINITE 1
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# define isfinite(x) finite(x)
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# endif
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#endif
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/* dtoa */
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char *BigDecimal_dtoa(double d_, int mode, int ndigits, int *decpt, int *sign, char **rve);
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/* rational */
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#ifndef HAVE_RB_RATIONAL_NUM
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static inline VALUE
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rb_rational_num(VALUE rat)
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{
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#ifdef RRATIONAL
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return RRATIONAL(rat)->num;
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#else
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return rb_funcall(rat, rb_intern("numerator"), 0);
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#endif
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}
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#endif
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#ifndef HAVE_RB_RATIONAL_DEN
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static inline VALUE
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rb_rational_den(VALUE rat)
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{
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#ifdef RRATIONAL
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return RRATIONAL(rat)->den;
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#else
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return rb_funcall(rat, rb_intern("denominator"), 0);
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#endif
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}
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#endif
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/* complex */
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#ifndef HAVE_RB_COMPLEX_REAL
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static inline VALUE
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rb_complex_real(VALUE cmp)
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{
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#ifdef RCOMPLEX
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return RCOMPLEX(cmp)->real;
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#else
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return rb_funcall(cmp, rb_intern("real"), 0);
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#endif
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}
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#endif
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#ifndef HAVE_RB_COMPLEX_IMAG
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static inline VALUE
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rb_complex_imag(VALUE cmp)
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{
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# ifdef RCOMPLEX
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return RCOMPLEX(cmp)->imag;
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# else
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return rb_funcall(cmp, rb_intern("imag"), 0);
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# endif
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}
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#endif
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/* array */
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#ifndef FIX_CONST_VALUE_PTR
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# if defined(__fcc__) || defined(__fcc_version) || \
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defined(__FCC__) || defined(__FCC_VERSION)
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/* workaround for old version of Fujitsu C Compiler (fcc) */
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# define FIX_CONST_VALUE_PTR(x) ((const VALUE *)(x))
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# else
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# define FIX_CONST_VALUE_PTR(x) (x)
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# endif
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#endif
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#ifndef HAVE_RB_ARRAY_CONST_PTR
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static inline const VALUE *
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rb_array_const_ptr(VALUE a)
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{
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return FIX_CONST_VALUE_PTR((RBASIC(a)->flags & RARRAY_EMBED_FLAG) ?
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RARRAY(a)->as.ary : RARRAY(a)->as.heap.ptr);
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}
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#endif
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#ifndef RARRAY_CONST_PTR
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# define RARRAY_CONST_PTR(a) rb_array_const_ptr(a)
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#endif
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#ifndef RARRAY_AREF
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# define RARRAY_AREF(a, i) (RARRAY_CONST_PTR(a)[i])
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#endif
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/* symbol */
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#ifndef HAVE_RB_SYM2STR
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static inline VALUE
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rb_sym2str(VALUE sym)
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{
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return rb_id2str(SYM2ID(sym));
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}
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#endif
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/* st */
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#ifndef ST2FIX
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# undef RB_ST2FIX
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# define RB_ST2FIX(h) LONG2FIX((long)(h))
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# define ST2FIX(h) RB_ST2FIX(h)
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#endif
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/* warning */
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#if !defined(HAVE_RB_CATEGORY_WARN) || !defined(HAVE_CONST_RB_WARN_CATEGORY_DEPRECATED)
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# define rb_category_warn(category, ...) rb_warn(__VA_ARGS__)
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#endif
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#if defined(__cplusplus)
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#if 0
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{ /* satisfy cc-mode */
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#endif
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} /* extern "C" { */
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#endif
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#endif /* MISSING_H */
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