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normalize: norm == 0.0f to norm < FLT_EPSILON, improving handling of very small vectors to prevent instability and overflow

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Recep Aslantas
2024-03-25 02:22:46 +03:00
parent 6a7d03bafb
commit 1de373a9bd
8 changed files with 30 additions and 22 deletions
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6
test/src/test_vec2.h
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@@ -241,7 +241,7 @@ TEST_IMPL(GLM_PREFIX, vec2_scale_as) {
GLM(vec2_scale_as)(v1, s, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
@@ -492,7 +492,7 @@ TEST_IMPL(GLM_PREFIX, vec2_normalize) {
GLM(vec2_normalize)(v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
@@ -519,7 +519,7 @@ TEST_IMPL(GLM_PREFIX, vec2_normalize_to) {
GLM(vec2_normalize_to)(v1, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))

10
test/src/test_vec3.h
View File

@@ -433,7 +433,7 @@ TEST_IMPL(GLM_PREFIX, vec3_scale_as) {
GLM(vec3_scale_as)(v1, s, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -704,7 +704,7 @@ TEST_IMPL(GLM_PREFIX, vec3_normalize) {
GLM(vec3_normalize)(v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -733,7 +733,7 @@ TEST_IMPL(GLM_PREFIX, vec3_normalize_to) {
GLM(vec3_normalize_to)(v1, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -764,7 +764,7 @@ TEST_IMPL(GLM_PREFIX, normalize) {
GLM(vec3_normalize)(v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -795,7 +795,7 @@ TEST_IMPL(GLM_PREFIX, normalize_to) {
GLM(vec3_normalize_to)(v1, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))

6
test/src/test_vec4.h
View File

@@ -410,7 +410,7 @@ TEST_IMPL(GLM_PREFIX, vec4_scale_as) {
GLM(vec4_scale_as)(v1, s, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2] + v1[3] * v1[3]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -701,7 +701,7 @@ TEST_IMPL(GLM_PREFIX, vec4_normalize) {
GLM(vec4_normalize)(v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2] + v1[3] * v1[3]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))
@@ -732,7 +732,7 @@ TEST_IMPL(GLM_PREFIX, vec4_normalize_to) {
GLM(vec4_normalize_to)(v1, v2);
norm = sqrtf(v1[0] * v1[0] + v1[1] * v1[1] + v1[2] * v1[2] + v1[3] * v1[3]);
if (norm == 0.0f) {
if (norm < FLT_EPSILON) {
ASSERT(test_eq(v1[0], 0.0f))
ASSERT(test_eq(v1[1], 0.0f))
ASSERT(test_eq(v1[2], 0.0f))