zig/std/math/nan.zig

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824 B
Zig

const math = @import("../math.zig");
/// Returns the nan representation for type T.
pub fn nan(comptime T: type) T {
return switch (T) {
f16 => math.nan_f16,
f32 => math.nan_f32,
f64 => math.nan_f64,
f128 => math.nan_f128,
else => @compileError("nan not implemented for " ++ @typeName(T)),
};
}
/// Returns the signalling nan representation for type T.
pub fn snan(comptime T: type) T {
// Note: A signalling nan is identical to a standard right now by may have a different bit
// representation in the future when required.
return switch (T) {
f16 => @bitCast(f16, math.nan_u16),
f32 => @bitCast(f32, math.nan_u32),
f64 => @bitCast(f64, math.nan_u64),
else => @compileError("snan not implemented for " ++ @typeName(T)),
};
}