#ifndef VLIBC_FLOAT_H
#define VLIBC_FLOAT_H

/*
 * vlibc — <float.h>.
 *
 * Characteristics of floating-point types (C23). Every value is derived from
 * compiler predefined macros (__FLT_MANT_DIG__, __DBL_MAX__, ...), so this
 * header is fully self-contained. The values reflect the x86_64 SSE2
 * environment: FLT_RADIX 2, IEC 60559 semantics for float, double and long
 * double (the 80-bit extended type).
 *
 * FLT_ROUNDS is 1 (round to nearest): vlibc does not implement the floating
 * environment yet, so the default rounding mode is always active. The fenv
 * todo (#42) is expected to replace this with a live read of the x87/MXCSR
 * control word.
 *
 * This header is ISO C core and is present in every profile.
 */

#include <vlibc/features.h>

/* Base of all floating-point types. */
#define FLT_RADIX __FLT_RADIX__

/* Current rounding mode (see the header comment). */
#define FLT_ROUNDS 1

/* Evaluation method (x86_64: all operations use the type's own range). */
#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__

/* IEC 60559 conformance of each type (C23). */
#define FLT_IS_IEC_60559 __FLT_IS_IEC_60559__
#define DBL_IS_IEC_60559 __DBL_IS_IEC_60559__
#define LDBL_IS_IEC_60559 __LDBL_IS_IEC_60559__

/* float. */
#define FLT_MANT_DIG __FLT_MANT_DIG__
#define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__
#define FLT_DIG __FLT_DIG__
#define FLT_MIN_EXP __FLT_MIN_EXP__
#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
#define FLT_MAX_EXP __FLT_MAX_EXP__
#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
#define FLT_MAX __FLT_MAX__
#define FLT_NORM_MAX __FLT_NORM_MAX__
#define FLT_EPSILON __FLT_EPSILON__
#define FLT_MIN __FLT_MIN__
#define FLT_TRUE_MIN __FLT_DENORM_MIN__

/* double. */
#define DBL_MANT_DIG __DBL_MANT_DIG__
#define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__
#define DBL_DIG __DBL_DIG__
#define DBL_MIN_EXP __DBL_MIN_EXP__
#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
#define DBL_MAX_EXP __DBL_MAX_EXP__
#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
#define DBL_MAX __DBL_MAX__
#define DBL_NORM_MAX __DBL_NORM_MAX__
#define DBL_EPSILON __DBL_EPSILON__
#define DBL_MIN __DBL_MIN__
#define DBL_TRUE_MIN __DBL_DENORM_MIN__

/* long double (x86_64: 80-bit extended). */
#define LDBL_MANT_DIG __LDBL_MANT_DIG__
#define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__
#define LDBL_DIG __LDBL_DIG__
#define LDBL_MIN_EXP __LDBL_MIN_EXP__
#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
#define LDBL_MAX_EXP __LDBL_MAX_EXP__
#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
#define LDBL_MAX __LDBL_MAX__
#define LDBL_NORM_MAX __LDBL_NORM_MAX__
#define LDBL_EPSILON __LDBL_EPSILON__
#define LDBL_MIN __LDBL_MIN__
#define LDBL_TRUE_MIN __LDBL_DENORM_MIN__

#endif /* VLIBC_FLOAT_H */