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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2021 Google, LLC. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
* @file
*/
/**
* @file Contains implementations of opal_min(a,b) and opal_max(a,b).
*/
#ifndef OPAL_MINMAX_H
#define OPAL_MINMAX_H
#include "opal_stdint.h"
#define OPAL_DEFINE_MINMAX(type, suffix) \
static inline const type opal_min_##suffix(const type a, const type b) \
{ \
return (a < b) ? a : b; \
} \
static inline const type opal_max_##suffix(const type a, const type b) \
{ \
return (a > b) ? a : b; \
}
OPAL_DEFINE_MINMAX(int8_t, 8)
OPAL_DEFINE_MINMAX(uint8_t, u8)
OPAL_DEFINE_MINMAX(int16_t, 16)
OPAL_DEFINE_MINMAX(uint16_t, u16)
OPAL_DEFINE_MINMAX(int32_t, 32)
OPAL_DEFINE_MINMAX(uint32_t, u32)
OPAL_DEFINE_MINMAX(int64_t, 64)
OPAL_DEFINE_MINMAX(uint64_t, u64)
OPAL_DEFINE_MINMAX(size_t, size_t)
OPAL_DEFINE_MINMAX(ssize_t, ssize_t)
OPAL_DEFINE_MINMAX(float, float)
OPAL_DEFINE_MINMAX(double, double)
OPAL_DEFINE_MINMAX(void *, ptr)
#if OPAL_C_HAVE__GENERIC
# define opal_min(a, b) \
(_Generic((a) + (b), \
int8_t: opal_min_8, \
uint8_t: opal_min_u8, \
int16_t: opal_min_16, \
uint16_t: opal_min_u16, \
int32_t: opal_min_32, \
uint32_t: opal_min_u32, \
int64_t: opal_min_64, \
uint64_t: opal_min_u64, \
float: opal_min_float, \
double: opal_min_double, \
void *: opal_min_ptr, \
default: opal_min_64)((a), (b)))
# define opal_max(a, b) \
(_Generic((a) + (b), \
int8_t: opal_max_8, \
uint8_t: opal_max_u8, \
int16_t: opal_max_16, \
uint16_t: opal_max_u16, \
int32_t: opal_max_32, \
uint32_t: opal_max_u32, \
int64_t: opal_max_64, \
uint64_t: opal_max_u64, \
float: opal_max_float, \
double: opal_max_double, \
void *: opal_max_ptr, \
default: opal_max_64)((a), (b)))
#else
/* these versions suffer from double-evaluation. please upgrade to a modern compiler */
# define opal_min(a, b) (((a) < (b)) ? (a) : (b))
# define opal_max(a, b) (((a) > (b)) ? (a) : (b))
#endif
#endif /* OPAL_MINMAX_H */
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