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

Generated by: LCOV version 1.16