Literals/Floating point: Difference between revisions

=={{header|MIPS Assembly}}==

Ultimately it depends on the assembler, however, it's standard to allow simple expressions like "2.5". Since MIPS uses a floating-point coprocessor with separate registers, the assembler understands that you're trying to load a float into the register rather than an integer, and so the assembler will calculate the IEEE-754 hexadecimal representation for you.

<lang mips>li.s f0,2.5 ;loads the single-precision float 2.5 (0x40200000) into register f0</lang>

Defining literal float data in your code also depends on the assembler. If all else fails, you can use a calculator to get the IEEE-754 hexadecimal representation of the desired float and store it as an "integer."

<lang mips>la $t0,pi

lwc1 $f0,0($t0) ;load pi into $f0

li $v0,10 ;exit command

syscall ;return to linux

pi:

.word 0x40490FDB ;IEEE-754 representation of 3.1415927</lang>