i32.trunc_f64_u
Pops a f64 value off the stack, converts it into an i32 value, and then pushes it back on to the stack. This looks at the i32 value as an unsigned integer (positive value only). Any decimal parts of the number will be lost. The value must exist within the range 0 to 4294967296 (2^32). If the value is outside this range then a runtime error will be thrown.

Syntax

i32.trunc_f64_u

Stack In

f64 The value to be converted.

Stack Out

i32 The i32 version of the f64 value.

Examples

;; Convert f64 1234.567 into an i32 value
f64.const 1234.567
i32.trunc_f64_u

;; The stack contains an i32 value of 1234

;; Convert f64 2200000000 into an i32 value
f64.const 2200000000
i32.trunc_f64_u

;; The stack contains an i32 value of 2200000000

;; Convert f64 -3.142 into an i32 value
f64.const -3.142
i32.trunc_f64_u

;; This is out of range and will throw a runtime error

;; Convert f64 5000000000 into an i32 value
f64.const 5000000000
i32.trunc_f64_u

;; This is out of range and will throw a runtime error