925891245d
`fmin`/`fmax` are defined as returning -0.0 as smaller than 0.0. This is not how the IEEE754 views these values and the interpreter was returning the wrong value in these operations since it was just using the standard IEEE754 comparisons. This also tries to preserve NaN information by avoiding passing NaN's through any operation that could canonicalize it.
106 lines
3.6 KiB
Plaintext
106 lines
3.6 KiB
Plaintext
test interpret
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test run
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target x86_64
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target aarch64
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target s390x
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function %fmax_f32(f32, f32) -> f32 {
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block0(v0: f32, v1: f32):
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v2 = fmax v0, v1
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return v2
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}
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; run: %fmax_f32(0x1.0, 0x2.0) == 0x2.0
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; run: %fmax_f32(0x1.0p10, 0x1.0p11) == 0x1.0p11
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; run: %fmax_f32(0x0.0, -0x0.0) == 0x0.0
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; run: %fmax_f32(-0x0.0, 0x0.0) == 0x0.0
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; run: %fmax_f32(+Inf, 0x0.0) == +Inf
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; run: %fmax_f32(0x0.0, +Inf) == +Inf
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; run: %fmax_f32(-Inf, 0x0.0) == 0x0.0
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; run: %fmax_f32(0x0.0, -Inf) == 0x0.0
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; run: %fmax_f32(+Inf, -Inf) == +Inf
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; F32 Epsilon / Max / Min Positive
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; run: %fmax_f32(0x1.000002p-23, 0x1.000000p-23) == 0x1.000002p-23
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; run: %fmax_f32(0x1.fffffcp127, 0x1.fffffep127) == 0x1.fffffep127
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; run: %fmax_f32(0x1.000000p-126, 0x1.000000p-126) == 0x1.000000p-126
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; F32 Subnormals
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; run: %fmax_f32(0x0.800002p-126, 0x0.800000p-126) == 0x0.800002p-126
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; run: %fmax_f32(-0x0.800002p-126, -0x0.800000p-126) == -0x0.800000p-126
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; F32 NaN's
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; For NaN's this operation is specified as producing a value that is a NaN
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; This behaviour differs from IEEE754's behaviour
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function %fmax_is_nan_f32(f32, f32) -> i32 {
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block0(v0: f32, v1: f32):
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v2 = fmax v0, v1
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v3 = fcmp ne v2, v2
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v4 = bint.i32 v3
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return v4
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}
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; run: %fmax_is_nan_f32(0x0.0, +NaN) == 1
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; run: %fmax_is_nan_f32(-NaN, 0x0.0) == 1
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; run: %fmax_is_nan_f32(0x0.0, +NaN:0x0) == 1
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; run: %fmax_is_nan_f32(0x0.0, +NaN:0x1) == 1
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; run: %fmax_is_nan_f32(0x0.0, +NaN:0x300001) == 1
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; run: %fmax_is_nan_f32(-NaN:0x0, 0x0.0) == 1
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; run: %fmax_is_nan_f32(-NaN:0x1, 0x0.0) == 1
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; run: %fmax_is_nan_f32(-NaN:0x300001, 0x0.0) == 1
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; run: %fmax_is_nan_f32(0x0.0, +sNaN:0x1) == 1
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; run: %fmax_is_nan_f32(-sNaN:0x1, 0x0.0) == 1
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; run: %fmax_is_nan_f32(0x0.0, +sNaN:0x200001) == 1
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; run: %fmax_is_nan_f32(-sNaN:0x200001, 0x0.0) == 1
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function %fmax_f64(f64, f64) -> f64 {
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block0(v0: f64, v1: f64):
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v2 = fmax v0, v1
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return v2
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}
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; run: %fmax_f64(0x1.0, 0x2.0) == 0x2.0
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; run: %fmax_f64(0x1.0p10, 0x1.0p11) == 0x1.0p11
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; run: %fmax_f64(0x0.0, -0x0.0) == 0x0.0
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; run: %fmax_f64(-0x0.0, 0x0.0) == 0x0.0
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; run: %fmax_f64(+Inf, 0x0.0) == +Inf
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; run: %fmax_f64(0x0.0, +Inf) == +Inf
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; run: %fmax_f64(-Inf, 0x0.0) == 0x0.0
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; run: %fmax_f64(0x0.0, -Inf) == 0x0.0
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; run: %fmax_f64(+Inf, -Inf) == +Inf
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; F64 Epsilon / Max / Min Positive
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; run: %fmax_f64(0x1.0000000000002p-52, 0x1.0000000000000p-52) == 0x1.0000000000002p-52
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; run: %fmax_f64(0x1.ffffffffffffcp1023, 0x1.fffffffffffffp1023) == 0x1.fffffffffffffp1023
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; run: %fmax_f64(0x1.0000000000000p-1022, 0x1.0000000000000p-1022) == 0x1.0000000000000p-1022
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; F64 Subnormals
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; run: %fmax_f64(0x0.8000000000002p-1022, 0x0.8000000000000p-1022) == 0x0.8000000000002p-1022
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; run: %fmax_f64(-0x0.8000000000002p-1022, -0x0.8000000000000p-1022) == -0x0.8000000000000p-1022
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; F64 NaN's
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; For NaN's this operation is specified as producing a value that is a NaN
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; This behaviour differs from IEEE754's behaviour
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function %fmax_is_nan_f64(f64, f64) -> i32 {
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block0(v0: f64, v1: f64):
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v2 = fmax v0, v1
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v3 = fcmp ne v2, v2
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v4 = bint.i32 v3
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return v4
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}
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; run: %fmax_is_nan_f64(0x0.0, +NaN) == 1
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; run: %fmax_is_nan_f64(-NaN, 0x0.0) == 1
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; run: %fmax_is_nan_f64(0x0.0, +NaN:0x0) == 1
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; run: %fmax_is_nan_f64(0x0.0, +NaN:0x1) == 1
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; run: %fmax_is_nan_f64(0x0.0, +NaN:0x4000000000001) == 1
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; run: %fmax_is_nan_f64(-NaN:0x0, 0x0.0) == 1
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; run: %fmax_is_nan_f64(-NaN:0x1, 0x0.0) == 1
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; run: %fmax_is_nan_f64(-NaN:0x4000000000001, 0x0.0) == 1
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; run: %fmax_is_nan_f64(0x0.0, +sNaN:0x1) == 1
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; run: %fmax_is_nan_f64(-sNaN:0x1, 0x0.0) == 1
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; run: %fmax_is_nan_f64(0x0.0, +sNaN:0x4000000000001) == 1
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; run: %fmax_is_nan_f64(-sNaN:0x4000000000001, 0x0.0) == 1
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