3671582c15
The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
28 lines
732 B
Zig
28 lines
732 B
Zig
const std = @import("../index.zig");
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const math = std.math;
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const assert = std.debug.assert;
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pub fn isNormal(x: var) bool {
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const T = @typeOf(x);
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switch (T) {
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f32 => {
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const bits = @bitCast(u32, x);
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return (bits + 0x00800000) & 0x7FFFFFFF >= 0x01000000;
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},
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f64 => {
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const bits = @bitCast(u64, x);
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return (bits + (1 << 52)) & (@maxValue(u64) >> 1) >= (1 << 53);
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},
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else => {
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@compileError("isNormal not implemented for " ++ @typeName(T));
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},
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}
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}
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test "math.isNormal" {
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assert(!isNormal(math.nan(f32)));
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assert(!isNormal(math.nan(f64)));
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assert(isNormal(f32(1.0)));
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assert(isNormal(f64(1.0)));
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}
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