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 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-03-31 09:27:24 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	7047972
RgX_normalize1	35705
X2XP1	5990734
ZX_Uspensky	1313932
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48574
ZX_rescale2prim	2233828
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128334
ZX_to_ZiX	16490526
ZiX_sqr	99230552
_gen_nored	11200910
_gen_one	14473534
_gen_zero	326035
_intervalcmp	0
_mp_add	24661296
_mp_cmul	34764313
_mp_mul	4374508
_mp_sqr	6298566
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537470
abs_update	8020968
abs_update_r	780132
all_roots	536364
append_clone	1616163
bkeval_single_power	5235858
check_ab	1178958
checkbound	2355046
checkvalidpol	267214
clean_roots	536415
cleanroots	231763
cmp_complex_appr	2241507
conformal_basecase	1406450
conformal_mapping	468776
conformal_pol	1406569
dblexp	6562458
dbllog2	303998759
dft	503320
dual_modulus	1014488
eval_rel_pol	13168439
fft	14194299
fft2	7462
findpower	41029724
fix_roots	537473
fix_roots1	398791
fujiwara_bound	2272037
fujiwara_bound_real	1407005
graeffe	49604516
homothetie	1613569
homothetie2n	9978851
homothetie_gauss	36565058
ind_maxlog2	904359
initdft	998245
isexactpol	240103
isexactscalar	934017
isreal	963702
isvalidcoeff	1230445
logmax_modulus	4458620
logmin_modulus	1617686
logmodulus	608209
logpre_modulus	608212
logradius	494925
lower_bound	41029260
mydbllog2i	226862812
mydbllog2r	57611558
mydbllogr	9565223
mygprec	63861893
mygprec_absolute	4344240
mygprec_special	537475
mygprecrc	215567548
mygprecrc_special	2181414
myshiftic	136076494
myshiftrc	35576474
newton_polygon	5520640
optimize_split	494926
parameters	494925
pol_to_gaussint	17627093
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166695
quicktofp	6981531
realroots	50627
refine_F	503317
refine_H	2464585
root_error	1914398
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297338
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495295
split_0_1	469146
split_0_2	469148
split_1	468777
split_2	494926
split_complete	1528057
split_fromU	494926
split_pols	166703
splitcauchy	166712
splitpoleval	5235589
tocomplex	1215879
update_radius	494924
usp	1126130

Generated by: LCOV version 1.16