division

How can you divide integers with floor, ceil and outwards rounding modes in C++?

自作多情 提交于 2020-08-19 11:01:12
问题 Recently, I saw this question which asks how you can divide integers with ceil rounding (towards positive infinity). Unfortunately the answers either don't work for signed integers or have problems with underflows and overflows. For instance, the accepted answer has this solution: q = 1 + ((x - 1) / y); When x is zero, there is an underflow to ~0 and the the result is incorrect. How can you implement ceil rounding correctly for signed and unsigned integers and how do you implement other

How can you divide integers with floor, ceil and outwards rounding modes in C++?

|▌冷眼眸甩不掉的悲伤 提交于 2020-08-19 11:00:30
问题 Recently, I saw this question which asks how you can divide integers with ceil rounding (towards positive infinity). Unfortunately the answers either don't work for signed integers or have problems with underflows and overflows. For instance, the accepted answer has this solution: q = 1 + ((x - 1) / y); When x is zero, there is an underflow to ~0 and the the result is incorrect. How can you implement ceil rounding correctly for signed and unsigned integers and how do you implement other

arctan function with cordic with vhdl

风流意气都作罢 提交于 2020-07-24 04:10:11
问题 I want to design arctan function with VHDL for using in demodulator design. I need a division & arctan function block. I have two signals, assumed that sin(alpha) and cos(alpha) from previos blocks. I want to retrieve alpha with using division [sin(alpha)/cos(alpha) = tan(alpha)] and then arctan function. I found that it is possible to do that with cordic algortihm, but a bit confused. Do you have any recommendation, docs or sth. how to design division & arctan with cordic in vhdl? Thanks in

arctan function with cordic with vhdl

依然范特西╮ 提交于 2020-07-24 04:08:37
问题 I want to design arctan function with VHDL for using in demodulator design. I need a division & arctan function block. I have two signals, assumed that sin(alpha) and cos(alpha) from previos blocks. I want to retrieve alpha with using division [sin(alpha)/cos(alpha) = tan(alpha)] and then arctan function. I found that it is possible to do that with cordic algortihm, but a bit confused. Do you have any recommendation, docs or sth. how to design division & arctan with cordic in vhdl? Thanks in

arctan function with cordic with vhdl

﹥>﹥吖頭↗ 提交于 2020-07-24 04:08:30
问题 I want to design arctan function with VHDL for using in demodulator design. I need a division & arctan function block. I have two signals, assumed that sin(alpha) and cos(alpha) from previos blocks. I want to retrieve alpha with using division [sin(alpha)/cos(alpha) = tan(alpha)] and then arctan function. I found that it is possible to do that with cordic algortihm, but a bit confused. Do you have any recommendation, docs or sth. how to design division & arctan with cordic in vhdl? Thanks in

Why is the dtype shown (even if it's the native one) when using floor division with NumPy?

大城市里の小女人 提交于 2020-07-15 01:49:24
问题 Normally the dtype is hidden when it's equivalent to the native type: >>> import numpy as np >>> np.arange(5) array([0, 1, 2, 3, 4]) >>> np.arange(5).dtype dtype('int32') >>> np.arange(5) + 3 array([3, 4, 5, 6, 7]) But somehow that doesn't apply to floor division or modulo: >>> np.arange(5) // 3 array([0, 0, 0, 1, 1], dtype=int32) >>> np.arange(5) % 3 array([0, 1, 2, 0, 1], dtype=int32) Why is there a difference? Python 3.5.4, NumPy 1.13.1, Windows 64bit 回答1: You actually have multiple