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 30595-a3cd9a95e8) Lines: 1467 1530 95.9 % Date: 2026-01-04 09:21:39 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15197
_sqrtnr	22589
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48560
realroots	50627
ZX_sturm_irred	116580
ZX_sturm_i	122975
polsolve	166690
split_pols	166698
splitcauchy	166700
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296168
_gen_zero	326017
fix_roots1	398348
conformal_mapping	467786
split_1	467787
split_0_1	468150
split_0_2	468150
split_2	493839
logradius	493840
optimize_split	493841
split_fromU	493841
parameters	493842
update_radius	493842
split_0	494205
refine_F	502232
dft	502234
all_roots	535875
clean_roots	535920
a_posteriori_errors	536973
fix_roots	536973
mygprec_special	536981
logpre_modulus	606547
logmodulus	606551
abs_update_r	778530
ind_maxlog2	902440
isexactscalar	931714
isreal	961628
initdft	996075
dual_modulus	1012193
usp	1125949
ZX_sturmpart	1128261
check_ab	1178888
tocomplex	1213161
isvalidcoeff	1228149
ZX_Uspensky	1313759
conformal_basecase	1403483
conformal_pol	1403601
fujiwara_bound_real	1406736
split_complete	1525382
homothetie	1609629
append_clone	1613503
logmin_modulus	1614340
root_error	1911562
mygprecrc_special	2178261
ZX_rescale2prim	2233550
cmp_complex_appr	2237265
fujiwara_bound	2271042
checkbound	2354904
refine_H	2459956
scalepol	4288159
mygprec_absolute	4337386
_mp_mul	4374498
logmax_modulus	4449524
splitpoleval	5235584
bkeval_single_power	5235664
newton_polygon	5505284
X2XP1	5989880
_mp_sqr	6298273
dblexp	6547209
quicktofp	6976802
RgX_gtofp_bit	7029109
abs_update	8003986
mydbllogr	9544756
homothetie2n	9954534
_gen_nored	11203175
eval_rel_pol	13134476
fft	14155384
_gen_one	14472888
ZX_to_ZiX	16450927
pol_to_gaussint	17583961
_mp_add	24662563
_mp_cmul	34769203
myshiftrc	35495357
homothetie_gauss	36490771
findpower	40946267
lower_bound	40946752
graeffe	49496510
mydbllog2r	56170117
mygprec	63742117
ZiX_sqr	99014577
myshiftic	135818678
mygprecrc	215132521
mydbllog2i	226387228
dbllog2	302066828

Generated by: LCOV version 1.16