From 5ae838d10596a272644da314937b01aa1a271a73 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Tue, 12 Mar 2024 15:46:14 -0700
Subject: std: remove one layer of redundant parse_float namespace

there are still more, though.

This provides a doctest for the `parseFloat` function.
---
 lib/std/fmt/parse_float/parse_float.zig | 66 ---------------------------------
 1 file changed, 66 deletions(-)
 delete mode 100644 lib/std/fmt/parse_float/parse_float.zig

(limited to 'lib/std/fmt/parse_float')

diff --git a/lib/std/fmt/parse_float/parse_float.zig b/lib/std/fmt/parse_float/parse_float.zig
deleted file mode 100644
index d7980d8937..0000000000
--- a/lib/std/fmt/parse_float/parse_float.zig
+++ /dev/null
@@ -1,66 +0,0 @@
-const std = @import("std");
-const parse = @import("parse.zig");
-const convertFast = @import("convert_fast.zig").convertFast;
-const convertEiselLemire = @import("convert_eisel_lemire.zig").convertEiselLemire;
-const convertSlow = @import("convert_slow.zig").convertSlow;
-const convertHex = @import("convert_hex.zig").convertHex;
-
-pub const ParseFloatError = error{
-    InvalidCharacter,
-};
-
-pub fn parseFloat(comptime T: type, s: []const u8) ParseFloatError!T {
-    if (@typeInfo(T) != .Float) {
-        @compileError("Cannot parse a float into a non-floating point type.");
-    }
-
-    if (T == f80) {
-        @compileError("TODO support parsing float to f80");
-    }
-
-    if (s.len == 0) {
-        return error.InvalidCharacter;
-    }
-
-    var i: usize = 0;
-    const negative = s[i] == '-';
-    if (s[i] == '-' or s[i] == '+') {
-        i += 1;
-    }
-    if (s.len == i) {
-        return error.InvalidCharacter;
-    }
-
-    const n = parse.parseNumber(T, s[i..], negative) orelse {
-        return parse.parseInfOrNan(T, s[i..], negative) orelse error.InvalidCharacter;
-    };
-
-    if (n.hex) {
-        return convertHex(T, n);
-    }
-
-    if (convertFast(T, n)) |f| {
-        return f;
-    }
-
-    if (T == f16 or T == f32 or T == f64) {
-        // If significant digits were truncated, then we can have rounding error
-        // only if `mantissa + 1` produces a different result. We also avoid
-        // redundantly using the Eisel-Lemire algorithm if it was unable to
-        // correctly round on the first pass.
-        if (convertEiselLemire(T, n.exponent, n.mantissa)) |bf| {
-            if (!n.many_digits) {
-                return bf.toFloat(T, n.negative);
-            }
-            if (convertEiselLemire(T, n.exponent, n.mantissa + 1)) |bf2| {
-                if (bf.eql(bf2)) {
-                    return bf.toFloat(T, n.negative);
-                }
-            }
-        }
-    }
-
-    // Unable to correctly round the float using the Eisel-Lemire algorithm.
-    // Fallback to a slower, but always correct algorithm.
-    return convertSlow(T, s[i..]).toFloat(T, negative);
-}
-- 
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