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bin/gems/bigdecimal-3.1.9/ext/bigdecimal/missing.h

@@ -0,0 +1,196 @@
+#ifndef MISSING_H
+#define MISSING_H 1
+
+#if defined(__cplusplus)
+extern "C" {
+#if 0
+} /* satisfy cc-mode */
+#endif
+#endif
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#ifdef HAVE_MATH_H
+# include <math.h>
+#endif
+
+#ifndef RB_UNUSED_VAR
+# if defined(_MSC_VER) && _MSC_VER >= 1911
+#  define RB_UNUSED_VAR(x) x [[maybe_unused]]
+
+# elif defined(__has_cpp_attribute) && __has_cpp_attribute(maybe_unused)
+#  define RB_UNUSED_VAR(x) x [[maybe_unused]]
+
+# elif defined(__has_c_attribute) && __has_c_attribute(maybe_unused)
+#  define RB_UNUSED_VAR(x) x [[maybe_unused]]
+
+# elif defined(__GNUC__)
+#  define RB_UNUSED_VAR(x) x __attribute__ ((unused))
+
+# else
+#  define RB_UNUSED_VAR(x) x
+# endif
+#endif /* RB_UNUSED_VAR */
+
+#if defined(_MSC_VER) && _MSC_VER >= 1310
+# define HAVE___ASSUME 1
+
+#elif defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1300
+# define HAVE___ASSUME 1
+#endif
+
+#ifndef UNREACHABLE
+# if __has_builtin(__builtin_unreachable)
+#  define UNREACHABLE __builtin_unreachable()
+
+# elif defined(HAVE___ASSUME)
+#  define UNREACHABLE __assume(0)
+
+# else
+#  define UNREACHABLE		/* unreachable */
+# endif
+#endif /* UNREACHABLE */
+
+/* bool */
+
+#if defined(__bool_true_false_are_defined)
+# /* Take that. */
+
+#elif defined(HAVE_STDBOOL_H)
+# include <stdbool.h>
+
+#else
+typedef unsigned char _Bool;
+# define bool _Bool
+# define true  ((_Bool)+1)
+# define false ((_Bool)-1)
+# define __bool_true_false_are_defined
+#endif
+
+/* abs */
+
+#ifndef HAVE_LABS
+static inline long
+labs(long const x)
+{
+    if (x < 0) return -x;
+    return x;
+}
+#endif
+
+#ifndef HAVE_LLABS
+static inline LONG_LONG
+llabs(LONG_LONG const x)
+{
+    if (x < 0) return -x;
+    return x;
+}
+#endif
+
+#ifdef vabs
+# undef vabs
+#endif
+#if SIZEOF_VALUE <= SIZEOF_INT
+# define vabs abs
+#elif SIZEOF_VALUE <= SIZEOF_LONG
+# define vabs labs
+#elif SIZEOF_VALUE <= SIZEOF_LONG_LONG
+# define vabs llabs
+#endif
+
+/* finite */
+
+#ifndef HAVE_FINITE
+static int
+finite(double)
+{
+    return !isnan(n) && !isinf(n);
+}
+#endif
+
+#ifndef isfinite
+# ifndef HAVE_ISFINITE
+#  define HAVE_ISFINITE 1
+#  define isfinite(x) finite(x)
+# endif
+#endif
+
+/* dtoa */
+char *BigDecimal_dtoa(double d_, int mode, int ndigits, int *decpt, int *sign, char **rve);
+
+/* rational */
+
+#ifndef HAVE_RB_RATIONAL_NUM
+static inline VALUE
+rb_rational_num(VALUE rat)
+{
+#ifdef RRATIONAL
+    return RRATIONAL(rat)->num;
+#else
+    return rb_funcall(rat, rb_intern("numerator"), 0);
+#endif
+}
+#endif
+
+#ifndef HAVE_RB_RATIONAL_DEN
+static inline VALUE
+rb_rational_den(VALUE rat)
+{
+#ifdef RRATIONAL
+    return RRATIONAL(rat)->den;
+#else
+    return rb_funcall(rat, rb_intern("denominator"), 0);
+#endif
+}
+#endif
+
+/* complex */
+
+#ifndef HAVE_RB_COMPLEX_REAL
+static inline VALUE
+rb_complex_real(VALUE cmp)
+{
+#ifdef RCOMPLEX
+  return RCOMPLEX(cmp)->real;
+#else
+  return rb_funcall(cmp, rb_intern("real"), 0);
+#endif
+}
+#endif
+
+#ifndef HAVE_RB_COMPLEX_IMAG
+static inline VALUE
+rb_complex_imag(VALUE cmp)
+{
+# ifdef RCOMPLEX
+  return RCOMPLEX(cmp)->imag;
+# else
+  return rb_funcall(cmp, rb_intern("imag"), 0);
+# endif
+}
+#endif
+
+/* st */
+
+#ifndef ST2FIX
+# undef RB_ST2FIX
+# define RB_ST2FIX(h) LONG2FIX((long)(h))
+# define ST2FIX(h) RB_ST2FIX(h)
+#endif
+
+/* warning */
+
+#if !defined(HAVE_RB_CATEGORY_WARN) || !defined(HAVE_CONST_RB_WARN_CATEGORY_DEPRECATED)
+#   define rb_category_warn(category, ...) rb_warn(__VA_ARGS__)
+#endif
+
+#if defined(__cplusplus)
+#if 0
+{ /* satisfy cc-mode */
+#endif
+}  /* extern "C" { */
+#endif
+
+#endif /* MISSING_H */