คำนวณลอการิทึมฐาน 2 ด้วย scimath ใน Python

ฟังก์ชัน numpy.emath.log2() คำนวณ log2 รองรับค่าพิเศษเช่น inf, -inf และค่าลบ

ขั้นตอน

import numpy as np

arr = np.array([np.inf, -np.inf, 16, np.exp(1), -np.exp(1), -32])
print("Our Array...\n", arr)
print("\nDimensions of our Array...\n", arr.ndim)
print("\nDatatype of our Array object...\n", arr.dtype)
print("\nShape of our Array object...\n", arr.shape)
print("\nResult (log2)...\n", np.emath.log2(arr))

ตัวอย่างโค้ดสมบูรณ์

import numpy as np

arr = np.array([np.inf, -np.inf, 16, np.exp(1), -np.exp(1), -32])
print("Our Array...\n", arr)
print("\nDimensions of our Array...\n", arr.ndim)
print("\nDatatype of our Array object...\n", arr.dtype)
print("\nShape of our Array object...\n", arr.shape)
print("\nResult (log2)...\n", np.emath.log2(arr))

ผลลัพธ์

Our Array... [ inf -inf 16. 2.71828183 -2.71828183 -32. ]
Dimensions of our Array... 1
Datatype of our Array object... float64
Shape of our Array object... (6,)
Result (log2)... [ inf+0.j inf+4.53236014j 4. +0.j 1.44269504+0.j 1.44269504+4.53236014j 5. +4.53236014j]