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29 lines
924 B
C
29 lines
924 B
C
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#ifndef __READWRITE_H__
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#define __READWRITE_H__
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#include <stdint.h>
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/* variables */
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union {
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uint32_t u;
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float f;
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} __u32_f32_union__;
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#define U32(x) \
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((uint32_t)((((uint8_t*)(x))[0] << 24) | (((uint8_t*)(x))[1] << 16) | \
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(((uint8_t*)(x))[2] << 8) | ((uint8_t*)(x))[3]))
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#define U16(x) ((uint16_t)(((*((uint8_t*)(x))) << 8) | ((uint8_t*)(x))[1]))
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#define U8(x) ((uint8_t)((uint8_t*)(x))[0])
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#define S32(x) ((int32_t)(U32(x)))
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#define S16(x) ((int16_t)(U16(x)))
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#define F32(x) (((__u32_f32_union__.u = U32(x)) & 0) + __u32_f32_union__.f)
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#define W32(x, v) \
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{ \
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*((uint8_t*)x + 3) = ((v)&0xFF); \
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*((uint8_t*)x + 2) = (((v) >> 8) & 0xFF); \
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*((uint8_t*)x + 1) = (((v) >> 16) & 0xFF); \
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*((uint8_t*)x + 0) = (((v) >> 24) & 0xFF); \
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}
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#endif
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