division

问题 In intel instruction, idiv(integer divsion) means signed division. I got the result of idiv , but I don't quite understand the result. - Example 0xffff0000 idiv 0xffff1100 - My wrong prediction As long as I know, quotient should be 0, and remainder should be 0xffff0000 and because... 0xffff0000 / 0xffff1100 = 0 0xffff0000 % 0xffff1100 = 0xffff0000 - However, the result was... Before idiv eax 0xffff0000 # dividend esi 0xffff1100 # divisor edx 0x0 After idiv eax 0xfffeedcc # quotient edx 0x7400

问题 In intel instruction, idiv(integer divsion) means signed division. I got the result of idiv , but I don't quite understand the result. - Example 0xffff0000 idiv 0xffff1100 - My wrong prediction As long as I know, quotient should be 0, and remainder should be 0xffff0000 and because... 0xffff0000 / 0xffff1100 = 0 0xffff0000 % 0xffff1100 = 0xffff0000 - However, the result was... Before idiv eax 0xffff0000 # dividend esi 0xffff1100 # divisor edx 0x0 After idiv eax 0xfffeedcc # quotient edx 0x7400

问题 How would I divide one data frame by another? The two data frames have the same columns and same rows, but I need to divide every intersect with its corresponding intersect into a new data frame, e.g. below: DF1 Name Jan Feb Mar Aaron 2 4 3 Blake 5 6 4 DF2 Name Jan Feb Mar Aaron 4 6 6 Blake 7 6 5 DF1/DF2 = DF3 DF3 (result) Name Jan Feb Mar Aaron 0.5 0.7 0.5 Blake 0.7 1.0 0.8 I'm using subset then dcast to build each data frame, but having a hard time figuring out how to divide them. Thanks

问题 The last word of a MIDI header chunk specifies the division. It contains information about whether delta times should be interpreted as ticks per quarter note or ticks per frame (where frame is a subdivision of a second). If bit 15 of this word is set then information is in ticks per frame. Next 7 bits (bit 14 through bit 8) specify the amount of frames per second and can contain one of four values: -24, -25, -29, or -30. (they are negative) Does anyone know whether the bit 15 counts towards

问题 I have an an algorithm for calculating the floating point square root divide using the newton-raphson algorith. My results are not fully accurate and sometimes off by 1 ulp. I was wondering if there is a refinement algorithm for floating point division to get the final bits of accuracy. I use the tuckerman test for square root, but is there a similar algorithm for division? Or can the tuckerman test be adapted for division? I tried using this algorithm too but didn't get full accuracy results

问题 I have an an algorithm for calculating the floating point square root divide using the newton-raphson algorith. My results are not fully accurate and sometimes off by 1 ulp. I was wondering if there is a refinement algorithm for floating point division to get the final bits of accuracy. I use the tuckerman test for square root, but is there a similar algorithm for division? Or can the tuckerman test be adapted for division? I tried using this algorithm too but didn't get full accuracy results

问题 When I run this simple operation in SQL server: Select 800.0 /30.0 I get the value 26.666666, where even if it rounds for 6 digits it should be 26.666667. How can I get the calculation to be accurate? I tried to search about it online and I found a solution where I cast each operand to a high precision decimal before the operation, but this will not be convenient for me because I have many long complex calculations. think there must be a better solution. 回答1: When a using division, in SQL

来源： https://stackoverflow.com/questions/63855276/numpy-arrays-have-bizarre-behavior-with-operator

来源： https://stackoverflow.com/questions/63855276/numpy-arrays-have-bizarre-behavior-with-operator

来源： https://stackoverflow.com/questions/15600132/division-produces-nan