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 30848-b1463d63da) Lines: 1467 1530 95.9 % Date: 2026-04-30 09:27:33 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	8382
ZX_deg1root	15203
_sqrtnr	22596
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48568
realroots	50627
ZX_sturm_irred	116679
ZX_sturm_i	123074
polsolve	166699
split_pols	166702
splitcauchy	166709
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296315
_gen_zero	326004
fix_roots1	398816
conformal_mapping	468815
split_1	468816
split_0_1	469186
split_0_2	469187
logradius	494957
update_radius	494962
split_2	494963
parameters	494964
optimize_split	494965
split_fromU	494965
split_0	495332
refine_F	503356
dft	503363
all_roots	536390
clean_roots	536437
a_posteriori_errors	537494
fix_roots	537500
mygprec_special	537500
logmodulus	608278
logpre_modulus	608279
abs_update_r	780171
ind_maxlog2	904394
isexactscalar	934122
isreal	963781
initdft	998325
dual_modulus	1014555
usp	1126022
ZX_sturmpart	1128242
check_ab	1178869
tocomplex	1215985
isvalidcoeff	1231117
ZX_Uspensky	1313846
conformal_basecase	1406562
conformal_pol	1406682
fujiwara_bound_real	1406918
split_complete	1528162
homothetie	1613702
append_clone	1616268
logmin_modulus	1617791
root_error	1914525
mygprecrc_special	2181546
ZX_rescale2prim	2233818
cmp_complex_appr	2241636
fujiwara_bound	2273961
checkbound	2354870
refine_H	2464708
scalepol	4297695
mygprec_absolute	4344466
_mp_mul	4374424
logmax_modulus	4459041
splitpoleval	5235313
bkeval_single_power	5235490
newton_polygon	5521266
X2XP1	5990616
_mp_sqr	6298398
dblexp	6563078
quicktofp	6987518
RgX_gtofp_bit	7048732
abs_update	8021961
mydbllogr	9566363
homothetie2n	9979989
_gen_nored	11198556
eval_rel_pol	13169636
fft	14196351
_gen_one	14472472
ZX_to_ZiX	16495291
pol_to_gaussint	17628671
_mp_add	24660529
_mp_cmul	34759984
myshiftrc	35580029
homothetie_gauss	36569333
lower_bound	41033766
findpower	41033942
graeffe	49610792
mydbllog2r	57622882
mygprec	63865823
ZiX_sqr	99240332
myshiftic	136091084
mygprecrc	215585728
mydbllog2i	226812944
dbllog2	303964166

Generated by: LCOV version 1.16