52 lines
834 B
C++
52 lines
834 B
C++
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#include "ebml_float.h"
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double float_read_ptr_len(uint64_t len, const uint8_t *ptr)
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{
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// TODO: big endian support
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if (len == 4)
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{
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float val;
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uint8_t *dest = (uint8_t *)&val;
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dest[3]=ptr[0];
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dest[2]=ptr[1];
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dest[1]=ptr[2];
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dest[0]=ptr[3];
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return val;
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}
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else if (len == 8)
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{
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double val;
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uint8_t *dest = (uint8_t *)&val;
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dest[7]=ptr[0];
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dest[6]=ptr[1];
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dest[5]=ptr[2];
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dest[4]=ptr[3];
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dest[3]=ptr[4];
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dest[2]=ptr[5];
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dest[1]=ptr[6];
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dest[0]=ptr[7];
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return val;
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}
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else if (len == 10)
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{
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long double val;
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memset(&val, 0, sizeof(val));
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uint8_t *dest = (uint8_t *)&val;
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dest[9]=ptr[0];
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dest[8]=ptr[1];
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dest[7]=ptr[2];
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dest[6]=ptr[3];
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dest[5]=ptr[4];
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dest[4]=ptr[5];
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dest[3]=ptr[6];
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dest[2]=ptr[7];
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dest[1]=ptr[8];
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dest[0]=ptr[9];
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return val;
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}
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else
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return 0;
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}
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