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Diffstat (limited to 'template/limits.c.tmpl')
| -rw-r--r-- | template/limits.c.tmpl | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/template/limits.c.tmpl b/template/limits.c.tmpl new file mode 100644 index 0000000000..fc95e0b307 --- /dev/null +++ b/template/limits.c.tmpl @@ -0,0 +1,93 @@ +%# -*- c -*- +% limits = %w[ +% FIXNUM +% CHAR SCHAR UCHAR WCHAR +% SHRT USHRT +% INT UINT +% LONG ULONG +% LLONG ULLONG +% INT8 UINT8 INT_LEAST8 UINT_LEAST8 INT_FAST8 UINT_FAST8 +% INT16 UINT16 INT_LEAST16 UINT_LEAST16 INT_FAST16 UINT_FAST16 +% INT32 UINT32 INT_LEAST32 UINT_LEAST32 INT_FAST32 UINT_FAST32 +% INT64 UINT64 INT_LEAST64 UINT_LEAST64 INT_FAST64 UINT_FAST64 +% INT128 UINT128 +% INTMAX UINTMAX +% INTPTR UINTPTR +% SSZIE SIZE +% PTRDIFF +% ] +% +% verbatim_integers = %w[ +% FLT_RADIX +% FLT_ROUNDS +% FLT_EVAL_METHOD +% FLT_MANT_DIG DBL_MANT_DIG LDBL_MANT_DIG +% FLT_DIG DBL_DIG LDBL_DIG +% FLT_MIN_EXP DBL_MIN_EXP LDBL_MIN_EXP +% FLT_MIN_10_EXP DBL_MIN_10_EXP LDBL_MIN_10_EXP +% FLT_MAX_EXP DBL_MAX_EXP LDBL_MAX_EXP +% FLT_MAX_10_EXP DBL_MAX_10_EXP LDBL_MAX_10_EXP +% FLT_DECIMAL_DIG DBL_DECIMAL_DIG LDBL_DECIMAL_DIG DECIMAL_DIG +% FLT_HAS_SUBNORM DBL_HAS_SUBNORM LDBL_HAS_SUBNORM +% ] +% +% # Beware; Ruby cannot handle LDBL_MAX. +% verbatim_doubles = %w[ +% FLT_MAX DBL_MAX +% FLT_EPSILON DBL_EPSILON +% FLT_MIN DBL_MIN +% FLT_TRUE_MIN DBL_TRUE_MIN +% ] +% +#include <limits.h> +#include "ruby/ruby.h" +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#ifdef HAVE_INTTYPES_H +# include <stdint.h> +#endif +#ifdef HAVE_FLOAT_H +# include <float.h> +#endif + +void +Init_limits(void) +{ + VALUE h = rb_hash_new(); + rb_define_const(rb_define_module("RbConfig"), "Limits", h); + +#ifdef HAVE_LONG_LONG +#define MAX2NUM(name) ULL2NUM(name ## _MAX) +#define MIN2NUM(name) LL2NUM(name ## _MIN) +#else +#define MAX2NUM(name) ULONG2NUM(name ## _MAX) +#define MIN2NUM(name) LONG2NUM(name ## _MIN) +#endif +#define DEFINE(k, v) rb_hash_aset(h, rb_str_new_cstr(#k), v) + +% limits.each do |type| +#ifdef <%= type %>_MAX + DEFINE(<%= type %>_MAX, MAX2NUM(<%= type %>)); +#endif +#ifdef <%= type %>_MIN + DEFINE(<%= type %>_MIN, MIN2NUM(<%= type %>)); +#endif +% end + +% verbatim_integers.each do |name| +#ifdef <%= name %> + DEFINE(<%= name %>, LONG2NUM(<%= name %>)); +#endif +% end + +% verbatim_doubles.each do |name| +#ifdef <%= name %> + DEFINE(<%= name %>, DBL2NUM(<%= name %>)); +#endif +% end + +#undef DEFINE +#undef MIN2NUM +#undef MAX2NUM +} |