Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30764-6b81f1f3fa) Lines: 1468 1530 95.9 % Date: 2026-03-24 09:26:44 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296313
RgX_gtofp_bit	7048012
RgX_normalize1	35705
X2XP1	5990808
ZX_Uspensky	1313915
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48570
ZX_rescale2prim	2233872
ZX_sturm	6395
ZX_sturm_i	123067
ZX_sturm_irred	116673
ZX_sturmpart	1128325
ZX_to_ZiX	16489919
ZiX_sqr	99235573
_gen_nored	11206998
_gen_one	14473021
_gen_zero	325996
_intervalcmp	0
_mp_add	24663526
_mp_cmul	34777173
_mp_mul	4374673
_mp_sqr	6298570
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	537473
abs_update	8020856
abs_update_r	780137
all_roots	536369
append_clone	1616167
bkeval_single_power	5235692
check_ab	1178952
checkbound	2355034
checkvalidpol	267214
clean_roots	536415
cleanroots	231763
cmp_complex_appr	2241511
conformal_basecase	1406452
conformal_mapping	468776
conformal_pol	1406571
dblexp	6562481
dbllog2	304069716
dft	503320
dual_modulus	1014477
eval_rel_pol	13168429
fft	14193757
fft2	7462
findpower	41030746
fix_roots	537476
fix_roots1	398793
fujiwara_bound	2272015
fujiwara_bound_real	1406985
graeffe	49607942
homothetie	1613561
homothetie2n	9979008
homothetie_gauss	36564193
ind_maxlog2	904348
initdft	998247
isexactpol	240103
isexactscalar	934017
isreal	963706
isvalidcoeff	1230445
logmax_modulus	4458637
logmin_modulus	1617689
logmodulus	608213
logpre_modulus	608214
logradius	494922
lower_bound	41031110
mydbllog2i	226895870
mydbllog2r	57612238
mydbllogr	9565102
mygprec	63864406
mygprec_absolute	4344212
mygprec_special	537477
mygprecrc	215571073
mygprecrc_special	2181417
myshiftic	136136971
myshiftrc	35577228
newton_polygon	5520710
optimize_split	494929
parameters	494929
pol_to_gaussint	17627031
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166705
quicktofp	6981466
realroots	50627
refine_F	503316
refine_H	2464585
root_error	1914417
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297368
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495294
split_0_1	469146
split_0_2	469148
split_1	468777
split_2	494929
split_complete	1528063
split_fromU	494929
split_pols	166704
splitcauchy	166708
splitpoleval	5235971
tocomplex	1215880
update_radius	494926
usp	1126141

Generated by: LCOV version 1.16