Do not round floats in interpolate #1052

Job	Run time
test_features	34s
test_features (default)	1m 13s
test_avif	2m 46s
Fuzz targets (afl)	2m 2s
clippy	2m 11s
test_features (gif)	29s
test_avif_decoding	2m 6s
test_big_endian	1m 12s
test_toolchains (1.61.0)	1m 9s
test_features (jpeg)	42s
test_big_endian (default)	2m 16s
test_toolchains (nightly)	2m 15s
test_features (png)	1m 9s
test_big_endian (webp)	1m 35s
test_toolchains (beta)	2m 9s
test_features (tiff)	57s
test_big_endian (webp-encoder)	2m 12s
test_features (ico)	41s
test_features (pnm)	25s
build_benchmarks	1m 19s
test_features (tga)	50s
Fuzz targets (cargo-fuzz)	4m 14s
test_features (webp)	31s
test_features (bmp)	37s
cargo-deny	29s
public_private_dependencies	17s
test_features (hdr)	57s
rustfmt	9s
test_features (dxt)	38s
verify_msrv	3m 42s
test_features (dds)	56s
test_features (farbfeld)	50s
test_features (openexr)	52s
test_features (jpeg_rayon)	1m 51s
test_features (webp-encoder)	1m 16s
	47m 31s

Provide feedback