Skip to content

[libc] Updated exp fuzz tests #148912

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 5 commits into from
Jul 16, 2025
Merged

[libc] Updated exp fuzz tests #148912

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
198b6bd
[libc] Updated exp fuzz tests
Jul 15, 2025
44cedcd
updating data pointer
Jul 15, 2025
662bb72
Merge branch 'main' into update-exp-fuzz
sribee8 Jul 15, 2025
f69d8ab
changed return inside for loop to continue
Jul 16, 2025
28a3ba1
fixed formatting
Jul 16, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
41 changes: 27 additions & 14 deletions libc/fuzzing/math/exp10_fuzz.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,27 +12,40 @@

#include "src/math/exp10.h"
#include "utils/MPFRWrapper/mpfr_inc.h"
#include <cstdint>
#include <cstring>
#include <iostream>
#include <math.h>

extern "C" int LLVMFuzzerTestOneInput(double x) {
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
mpfr_t input;
mpfr_init2(input, 53);
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp10(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);
for (size_t i = 0; i < size / sizeof(double); ++i) {
double x;
std::memcpy(&x, data, sizeof(double));
data += sizeof(double);

double result = LIBC_NAMESPACE::exp10(x);
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;

if (result != to_compare)
__builtin_trap();
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp10(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);

double result = LIBC_NAMESPACE::exp10(x);

if (result != to_compare) {
std::cout << std::hexfloat << "Failing input: " << x << std::endl;
std::cout << std::hexfloat << "Failing output: " << result << std::endl;
std::cout << std::hexfloat << "Expected: " << to_compare << std::endl;
__builtin_trap();
}
}
mpfr_clear(input);
return 0;
}
41 changes: 27 additions & 14 deletions libc/fuzzing/math/exp2_fuzz.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,27 +12,40 @@

#include "src/math/exp2.h"
#include "utils/MPFRWrapper/mpfr_inc.h"
#include <cstdint>
#include <cstring>
#include <iostream>
#include <math.h>

extern "C" int LLVMFuzzerTestOneInput(double x) {
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
mpfr_t input;
mpfr_init2(input, 53);
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp2(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);
for (size_t i = 0; i < size / sizeof(double); ++i) {
double x;
std::memcpy(&x, data, sizeof(double));
data += sizeof(double);

double result = LIBC_NAMESPACE::exp2(x);
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;

if (result != to_compare)
__builtin_trap();
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp2(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);

double result = LIBC_NAMESPACE::exp2(x);

if (result != to_compare) {
std::cout << std::hexfloat << "Failing input: " << x << std::endl;
std::cout << std::hexfloat << "Failing output: " << result << std::endl;
std::cout << std::hexfloat << "Expected: " << to_compare << std::endl;
__builtin_trap();
}
}
mpfr_clear(input);
return 0;
}
41 changes: 27 additions & 14 deletions libc/fuzzing/math/exp_fuzz.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,27 +12,40 @@

#include "src/math/exp.h"
#include "utils/MPFRWrapper/mpfr_inc.h"
#include <cstdint>
#include <cstring>
#include <iostream>
#include <math.h>

extern "C" int LLVMFuzzerTestOneInput(double x) {
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
mpfr_t input;
mpfr_init2(input, 53);
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);
for (size_t i = 0; i < size / sizeof(double); ++i) {
double x;
std::memcpy(&x, data, sizeof(double));
data += sizeof(double);

double result = LIBC_NAMESPACE::exp(x);
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;

if (result != to_compare)
__builtin_trap();
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_exp(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);

double result = LIBC_NAMESPACE::exp(x);

if (result != to_compare) {
std::cout << std::hexfloat << "Failing input: " << x << std::endl;
std::cout << std::hexfloat << "Failing output: " << result << std::endl;
std::cout << std::hexfloat << "Expected: " << to_compare << std::endl;
__builtin_trap();
}
}
mpfr_clear(input);
return 0;
}
41 changes: 27 additions & 14 deletions libc/fuzzing/math/expm1_fuzz.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,27 +12,40 @@

#include "src/math/expm1.h"
#include "utils/MPFRWrapper/mpfr_inc.h"
#include <cstdint>
#include <cstring>
#include <iostream>
#include <math.h>

extern "C" int LLVMFuzzerTestOneInput(double x) {
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
mpfr_t input;
mpfr_init2(input, 53);
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_expm1(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);
for (size_t i = 0; i < size / sizeof(double); ++i) {
double x;
std::memcpy(&x, data, sizeof(double));
data += sizeof(double);

double result = LIBC_NAMESPACE::expm1(x);
// remove NaN and inf
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;

if (result != to_compare)
__builtin_trap();
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_expm1(input, input, MPFR_RNDN);
mpfr_subnormalize(input, output, MPFR_RNDN);
double to_compare = mpfr_get_d(input, MPFR_RNDN);

double result = LIBC_NAMESPACE::expm1(x);

if (result != to_compare) {
std::cout << std::hexfloat << "Failing input: " << x << std::endl;
std::cout << std::hexfloat << "Failing output: " << result << std::endl;
std::cout << std::hexfloat << "Expected: " << to_compare << std::endl;
__builtin_trap();
}
}
mpfr_clear(input);
return 0;
}
Loading