我正在开发一个程序,该程序应该将用户输入的浮点数转换为整数,我可以使它工作,但仅适用于分数部分不超过2 ^ -1的浮点数,显然是1/2。适用于75.5或2.5之类的数字,但不适用于75.625之类的数字。我需要将代码保持这种格式,但是我不确定应该如何使程序左右移动(在主题标签周围)以取消小数部分,而不管小数部分是什么。
.data
Prompt: .asciiz "\n Please Input a value for the float N = "
result1: .asciiz " The converted N is "
.text
li $v0, 4 # system call code for Print String
la $a0, Prompt # loads address of prompt into $a0
syscall # print the message in Prompt
li $v0, 6 # System call code for Read Float
syscall # read whatever you input float as
mfc1 $t1, $f0 # Stores the float value into the $t1
srl $t2, $t1, 23 # srl by 23 to leave out the biased exponent and store it
in $t2
add $s3, $t2, -127 # Subtract 127 to get the exponent
sll $t4, $t1, 9 # Shift left and right by 9 to remove the exponent
srl $t5, $t4, 9
addi $t6, $t5, 8388608 # Add the implied bit (2^24)
add $t7, $s3, 9 # Add 9 to the exponent value
sllv $s4, $t6, $t7 # Shifts the implied bit to 2^32 (32nd bit)
###########################
rol $s5, $t6, $t7 #rotate to the left by whatever the exponent + 9 is to
get
the integer part of the number to the first few bits
sll $s5, $s5, 1
srl $s5, $s5, 1 # sll and srl cancels out the fractional part #should be
1001011 #s5 is the newly converted integer
######################
li $v0, 4 # Tells computer to get ready to print a .asciiz number
la $a0, result1
syscall
li $v0, 1 # Tells computer to get ready to print the converted integer
number
move $a0, $s5 # Moves the contents of $s5 to %a0 so it can be called
syscall # Returns the integer