1 files changed, 44 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/exp.cache.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/exp.cache.ts
new file mode 100644
index 0000000000..5ecc8b2d97
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/exp.cache.ts
@@ -0,0 +1,44 @@
+import { kValue } from '../../../../../util/constants.js';
+import { FP } from '../../../../../util/floating_point.js';
+import { biasedRange, linearRange } from '../../../../../util/math.js';
+import { makeCaseCache } from '../../case_cache.js';
+
+// floor(ln(max f32 value)) = 88, so exp(88) will be within range of a f32, but exp(89) will not
+// floor(ln(max f64 value)) = 709, so exp(709) can be handled by the testing framework, but exp(710) will misbehave
+const f32_inputs = [
+  0, // Returns 1 by definition
+  -89, // Returns subnormal value
+  kValue.f32.negative.min, // Closest to returning 0 as possible
+  ...biasedRange(kValue.f32.negative.max, -88, 100),
+  ...biasedRange(kValue.f32.positive.min, 88, 100),
+  ...linearRange(89, 709, 10), // Overflows f32, but not f64
+];
+
+// floor(ln(max f16 value)) = 11, so exp(11) will be within range of a f16, but exp(12) will not
+const f16_inputs = [
+  0, // Returns 1 by definition
+  -12, // Returns subnormal value
+  kValue.f16.negative.min, // Closest to returning 0 as possible
+  ...biasedRange(kValue.f16.negative.max, -11, 100),
+  ...biasedRange(kValue.f16.positive.min, 11, 100),
+  ...linearRange(12, 709, 10), // Overflows f16, but not f64
+];
+
+export const d = makeCaseCache('exp', {
+  f32_const: () => {
+    return FP.f32.generateScalarToIntervalCases(f32_inputs, 'finite', FP.f32.expInterval);
+  },
+  f32_non_const: () => {
+    return FP.f32.generateScalarToIntervalCases(f32_inputs, 'unfiltered', FP.f32.expInterval);
+  },
+  f16_const: () => {
+    return FP.f16.generateScalarToIntervalCases(f16_inputs, 'finite', FP.f16.expInterval);
+  },
+  f16_non_const: () => {
+    return FP.f16.generateScalarToIntervalCases(f16_inputs, 'unfiltered', FP.f16.expInterval);
+  },
+  abstract: () => {
+    // exp has an ulp accuracy, so is only expected to be as accurate as f32
+    return FP.abstract.generateScalarToIntervalCases(f32_inputs, 'finite', FP.f32.expInterval);
+  },
+});