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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,35 +1,38 @@ | ||
| use super::*; | ||
|
|
||
| pub(super) fn shrink(s: Series) -> PolarsResult<Series> { | ||
| if s.dtype().is_numeric() { | ||
| if s.dtype().is_float() { | ||
| s.cast(&DataType::Float32) | ||
| } else if s.dtype().is_unsigned_integer() { | ||
| let max = s.max_reduce()?.value().extract::<u64>().unwrap_or(0_u64); | ||
| if cfg!(feature = "dtype-u8") && max <= u8::MAX as u64 { | ||
| s.cast(&DataType::UInt8) | ||
| } else if cfg!(feature = "dtype-u16") && max <= u16::MAX as u64 { | ||
| s.cast(&DataType::UInt16) | ||
| } else if max <= u32::MAX as u64 { | ||
| s.cast(&DataType::UInt32) | ||
| } else { | ||
| Ok(s) | ||
| } | ||
| } else { | ||
| let min = s.min_reduce()?.value().extract::<i64>().unwrap_or(0_i64); | ||
| let max = s.max_reduce()?.value().extract::<i64>().unwrap_or(0_i64); | ||
| if !s.dtype().is_numeric() { | ||
| return Ok(s); | ||
| } | ||
|
|
||
| if s.dtype().is_float() { | ||
| return s.cast(&DataType::Float32); | ||
| } | ||
|
|
||
| if s.dtype().is_unsigned_integer() { | ||
| let max = s.max_reduce()?.value().extract::<u64>().unwrap_or(0_u64); | ||
|
|
||
| if cfg!(feature = "dtype-i8") && min >= i8::MIN as i64 && max <= i8::MAX as i64 { | ||
| s.cast(&DataType::Int8) | ||
| } else if cfg!(feature = "dtype-i16") && min >= i16::MIN as i64 && max <= i16::MAX as i64 { | ||
| s.cast(&DataType::Int16) | ||
| } else if min >= i32::MIN as i64 && max <= i32::MAX as i64 { | ||
| s.cast(&DataType::Int32) | ||
| } else { | ||
| Ok(s) | ||
| } | ||
| if cfg!(feature = "dtype-u8") && max <= u8::MAX as u64 { | ||
| s.cast(&DataType::UInt8) | ||
| } else if cfg!(feature = "dtype-u16") && max <= u16::MAX as u64 { | ||
| s.cast(&DataType::UInt16) | ||
| } else if max <= u32::MAX as u64 { | ||
| s.cast(&DataType::UInt32) | ||
| } else { | ||
| Ok(s) | ||
| } | ||
| } else { | ||
| Ok(s) | ||
| let min = s.min_reduce()?.value().extract::<i64>().unwrap_or(0_i64); | ||
| let max = s.max_reduce()?.value().extract::<i64>().unwrap_or(0_i64); | ||
|
|
||
| if cfg!(feature = "dtype-i8") && min >= i8::MIN as i64 && max <= i8::MAX as i64 { | ||
| s.cast(&DataType::Int8) | ||
| } else if cfg!(feature = "dtype-i16") && min >= i16::MIN as i64 && max <= i16::MAX as i64 { | ||
| s.cast(&DataType::Int16) | ||
| } else if min >= i32::MIN as i64 && max <= i32::MAX as i64 { | ||
| s.cast(&DataType::Int32) | ||
| } else { | ||
| Ok(s) | ||
| } | ||
| } | ||
| } |