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Code functions that pack and unpack a range of a float into a limited number of bits.
unsigned int pack_float(float val, float minVal, float maxVal, int bits);
float unpack_float(unsigned int val, float minVal, float maxVal, int bits);
unsigned int pack_float(float val, float minVal, float maxVal, int bits) { assert(bits >= 0 && bits < 32); assert(val >= minVal && val < maxVal); return (1U<<bits)*(val-minVal)/(maxVal-minVal); }float unpack_float(unsigned int val, float minVal, float maxVal, int bits) { assert(bits >= 0 && bits < 32); assert(val < (1U<<bits)); return val*(maxVal-minVal)/(1U<<bits)+minVal; } Pack and unpack a range of a float into a limited number of bits.
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原文地址：http://www.cnblogs.com/mynamepfd/p/4297962.html
