encoding.binary: little_endian_f32_at

Author: medvednikov

vlib/builtin/builtin.c.v

@@ -622,7 +622,6 @@ pub fn free(ptr voidptr) {
 // memdup dynamically allocates a `sz` bytes block of memory on the heap
 // memdup then copies the contents of `src` into the allocated space and
 // returns a pointer to the newly allocated space.
-
 @[unsafe]
 pub fn memdup(src voidptr, sz isize) voidptr {
 	$if trace_memdup ? {

vlib/encoding/binary/little_endian.v

@@ -151,3 +151,11 @@ pub fn little_endian_put_u64_at(mut b []u8, v u64, o int) {
 pub fn little_endian_put_u64_end(mut b []u8, v u64) {
 	little_endian_put_u64_at(mut b, v, b.len - 8)
 }
+
+@[direct_array_access; inline]
+pub fn little_endian_f32_at(b []u8, o int) f32 {
+	_ = b[o] // bounds check
+	_ = b[o + 3] // bounds check
+	u := u32(b[o]) | (u32(b[o + 1]) << u32(8)) | (u32(b[o + 2]) << u32(16)) | (u32(b[o + 3]) << u32(24))
+	return *(&f32(&u))
+}