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58 #define ADD_SAMPLE(m, s) \
59 (m.sum_of_samples += (float)(s), \
60 m.sum_of_squares += (float)(s) * (float)(s), ++m.num_samples)
69 ((m).num_samples ? ((float)((m).sum_of_samples / (m).num_samples)) : 0)
78 #define new_measurement(m) \
79 ((m).num_samples = 0, (m).sum_of_samples = 0, (m).sum_of_squares = 0)
87 #define number_of_samples(m) \
96 #define standard_deviation(m) \
97 ((float) sqrt (VARIANCE (m)))
105 #define VARIANCE(m) \
106 (((m).num_samples > 1) \
107 ? ((float)(((m).num_samples * (m).sum_of_squares - \
108 (m).sum_of_samples * (m).sum_of_samples) / \
109 (((m).num_samples - 1) * (m).num_samples))) \
118 #define print_summary(string, measure) \
119 cprintf("\t%-20s \tn = %d, \tm = %4.2f, \ts = %4.2f\n ", string, \
120 number_of_samples(measure), MEAN(measure), \
121 standard_deviation(measure))